US2980329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counter resetting means
Assignee: DURANT Manufacturing CO
•
Filing: 1956-09-28
•
Granted: 1961-04-18
•
Expires: 1976-09-28
Abstract
No abstract record available.
Inventors
- 👤 Walter W Hoffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:11
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/28; G06M1/30; G06M1/32; G06M1/323; G06M1/303
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US545034A
Cited
US1321648A
Cited
US1356607A
Cited
US1409547A
Cited
US2219636A
Cited
US2769596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |