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C & D ACQUISITION CORP A CORP OF DE

C & D ACQU

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US3990439A	Protective breathing apparatus and valve therefor	Expired / Lapsed	1974-12-05	1976-11-09	10	Details
US3744887A	Plastic hinge for spectacles	Expired / Lapsed	1972-06-22	1973-07-10	11	Details
US3320225A	Method for manufacturing a plastic hinge	Expired / Lapsed	1965-02-08	1967-05-16	2	Details
US3109425A	Respirator speaking diaphragm and exhalation valve unit	Expired / Lapsed	1960-03-04	1963-11-05	0	Details