Patent US1996807A successfully refreshed from Google Patents.
US1996807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve gear for operating dual valves
Assignee: Motors Liquidation Co
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Filing: 1933-09-25
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Granted: 1935-04-09
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Expires: 1953-09-25
Abstract
No abstract record available.
Inventors
- 👤 George E A Hallett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:38
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/26; F02; F02B; F02B2275/00; F02B2275/20; F02B3/00; F02B3/06; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4214; F02F2001/244; F02F2001/247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-04-08 | 1938-10-08 | 1939-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-04-08 | 1942-10-08 | 1943-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-04-08 | 1946-10-08 | 1947-04-09 | $7700.00 | Window Closed / Lapsed |