BARRETT, HAENTJENS & COMPANY

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HAZLETON, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Centrifugal oxygenator and method for treatment of waste water
- Patent number 4,877,532
- Issue date Oct 31, 1989
- Barrett, Haentjens & Company
- Walter D. Haentjens
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
72028017 - HAZLETON
- Serial number 72028017
- Registration number 654754
- Filing date Apr 12, 1957
- BARRETT, HAENTJENS & COMPANY
- 7 - Machines and machine tools