US2950754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas operated engine heater
Assignee: Individual
•
Filing: 1958-03-31
•
Granted: 1960-08-30
•
Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 Bertie Louis Charles
- 👤 Piette Raymond Gerard
- 👤 Champoux Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:20
CPC Classifications
F; F02; F02N; F02N19/00; F02N19/02; F02N19/04; F02N19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2046812A
Cited
US2074168A
Cited
US2159257A
Cited
US2125473A
Cited
US2180675A
Cited
US2265294A
Cited
US2605821A
Cited
US2398008A
Cited
US2411230A
Cited
US2710056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |