- Chrono-Log Corporation
- 2 W Park Rd
- Havertown, Pennsylvania 19083-4620
- Phone: 610-853-1130
- Number of Employees: 24
- Annual Receipts: $5,250,000
- Business Start Date: 1957
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- Knight Corporation
- 2138 Darby Rd
- Havertown, Pennsylvania 19083-2306
- Phone: 610-853-2161
- Website: www.knightcorp.com
- Number of Employees: 40
- Annual Receipts: $7,000,000
- Business Start Date: 1974
- More Detail:
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- Power Modules Inc
- 4 Raymond Dr Ste C
- Havertown, Pennsylvania 19083-3188
- Phone: 610-292-8900
- Website: www.pmiheat.com
- Number of Employees: 9
- Annual Receipts: $2,000
- Business Start Date: 1973
- More Detail:
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- Protokinetics LLC
- 60 Garlor Dr
- Havertown, Pennsylvania 19083-1224
- Phone: 610-449-4879
- Website: www.protokinetics.com
- Number of Employees: 3
- Annual Receipts: $1,500,000
- Business Start Date: 2012
- More Detail:
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