Patent US2109809A successfully refreshed from Google Patents.
US2109809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: Packard Motor Car Co
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Filing: 1932-06-22
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Granted: 1938-03-01
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Expires: 1952-06-22
Abstract
No abstract record available.
Inventors
- 👤 Cornelius W Van Ranst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:54
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/20; F01L1/22; F01L1/24; F01L1/12; F01L1/18; F01L1/181; F01M; F01M9/00; F01M9/10; F01M9/104
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) | 1941-02-28 | 1941-08-30 | 1942-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-02-28 | 1945-08-30 | 1946-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-02-28 | 1949-08-30 | 1950-03-01 | $7700.00 | Window Closed / Lapsed |