- Angeles Shooting Ranges Incorporated
- 12651 Little Tujunga Canyon Rd
- Sylmar, California 91342-6311
- Phone: 818-899-2255
- Number of Employees: 35
- Annual Receipts: $3,529,033
- Business Start Date: 1958
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- Ansett Aircraft Spares & Services INC
- 12675 Encinitas Ave
- Sylmar, California 91342-3635
- Phone: 818-362-1100
- Website: www.ansettspares.com
- Number of Employees: 60
- Annual Receipts: $30,000,000
- Business Start Date: 1958
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- Astoria Gardens Tenant Association
- 14015 Astoria St Ste B
- Sylmar, California 91342-2940
- Phone: 310-802-6670
- Number of Employees: 0
- Annual Receipts: $0
- Business Start Date: 1999
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- DG Engineering Corp.
- 13300 Ralston Ave
- Sylmar, California 91342-7608
- Phone: 818-364-9024
- Number of Employees: 24
- Annual Receipts: $2,500,000
- Business Start Date: 1973
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- Hi-Temp Metals INC
- 12910 San Fernando Rd
- Sylmar, California 91342-3601
- Phone: 818-362-5357
- Number of Employees: 17
- Annual Receipts: $28,000,000
- Business Start Date: 1971
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- ISU Petasys Corp.
- 12930 Bradley Ave
- Sylmar, California 91342-3829
- Phone: 818-833-4812
- Website: www.isupetasys.com
- Number of Employees: 100
- Annual Receipts: $22,665,000
- Business Start Date: 1997
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- Janco Corporation
- 13955 Balboa Blvd
- Sylmar, California 91342-1084
- Phone: 818-361-3366
- Website: www.esterline.com/controlsystems/JANCO
- Number of Employees: 403
- Annual Receipts: $85,000,000
- Business Start Date: 1947
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- L-3 Communications Corporation
- 15825 Roxford St
- Sylmar, California 91342-3537
- Phone: 818-833-2140
- Number of Employees: 63000
- Annual Receipts: $15,398,000,000
- Business Start Date: 1998
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- Mason Electric Company
- 13955 Balboa Blvd
- Sylmar, California 91342-1084
- Phone: 818-361-3366
- Website: www.esterline.com/controlsystems/MASON
- Number of Employees: 403
- Annual Receipts: $85,000,000
- Business Start Date: 1968
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- Patriot Personal Defense
- 14643 Polk St
- Sylmar, California 91342-4006
- Phone: 818-833-7783
- Website: www.patriotpersonaldefense.us
- Number of Employees: 1
- Annual Receipts: $5,550
- Business Start Date: 2012
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- Professional Finishing Systems & Supplies INC
- 12341 Gladstone Ave
- Sylmar, California 91342-5319
- Phone: 818-365-8888
- Website: www.profinishing.com
- Number of Employees: 11
- Annual Receipts: $2,000,000
- Business Start Date: 1980
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- Quallion LLC
- 12744 San Fernando Rd (sylmar Biomedical Park)
- Sylmar, California 91342-3728
- Phone: 818-833-2025
- Website: www.quallion.com
- Number of Employees: 140
- Annual Receipts: $30,000,000
- Business Start Date: 1998
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- Salvation Army Lake View Terrace Residences Inc
- 11850 Foothill Blvd
- Sylmar, California 91342-0835
- Phone: 562-491-8767
- Number of Employees: 0
- Annual Receipts: $0
- Business Start Date: 2004
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- Seaman Products Of California
- 12329 Gladstone Ave
- Sylmar, California 91342-5319
- Phone: 818-361-2012
- Number of Employees: 9
- Annual Receipts: $956,432
- Business Start Date: 1951
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- Spectrolab INC
- 12500 Gladstone Ave
- Sylmar, California 91342-5373
- Phone: 818-898-2831
- Website: www.spectrolab.com
- Number of Employees: 160000
- Annual Receipts: $60,000,000,000
- Business Start Date: 1956
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- Standex Structural Aluminum Designs
- 12935 Arroyo St
- Sylmar, California 91342-5338
- Phone: 818-365-6464
- Number of Employees: 3
- Annual Receipts: $240,000
- Business Start Date: 1976
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- Tutor Perini Corporation
- 15901 Olden St
- Sylmar, California 91342-1051
- Phone: 508-628-2417
- Website: www.tutorperini.com/
- Number of Employees: 9679
- Annual Receipts: $4,000,667,000
- Business Start Date: 1894
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