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Heald Machine Co

Heald Mach

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US3220030A	Tap holder with means to compensate for misalignment of too…	Expired / Lapsed	1963-08-29	1965-11-30	2	Details
US3139570A	Positional servo system	Expired / Lapsed	1961-04-17	1964-06-30	2	Details
US3077061A	Grinding machine	Expired / Lapsed	1960-02-29	1963-02-12	2	Details
US1962459A	Hydraulic system for automatic machines	Expired / Lapsed	1931-08-07	1934-06-12	0	Details
US1583351A	Grinding machine	Expired / Lapsed	1922-07-14	1926-05-04	0	Details