US2939442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve lifter
Assignee: Motors Liquidation Co
•
Filing: 1958-08-13
•
Granted: 1960-06-07
•
Expires: 1978-08-13
Abstract
No abstract record available.
Inventors
- 👤 Dornbos John
- 👤 Ellen L Karchner
- 👤 Charles H Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:23
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/12; F01L1/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2840063A
Cited
US2845914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |