US3438536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable covers
Assignee: HEINEMANN ELECTRIC SA Ltd
•
Filing: 1967-11-24
•
Granted: 1969-04-15
•
Expires: 1987-11-24
Abstract
No abstract record available.
Inventors
- 👤 Edward Tarchalski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:14
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/06; F16B5/0607; F16B5/0621; F16B5/0664; H; H02; H02B; H02B1/00; H02B1/015; H02B1/06; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/14; H02B2001/0155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1491325A
Cited
US3366267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |