Patent JPS57136382A successfully refreshed from Google Patents.
US1250461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion engine.
Assignee: Individual
•
Filing: 1917-03-15
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Granted: 1917-12-18
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Expires: 1937-03-15
Abstract
No abstract record available.
Inventors
- 👤 Philip L Howe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:31
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/14; E; E03; E03C; E03C1/00; E03C1/02; E03C1/04; E03C1/046; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86099; Y10T137/87571; Y10T137/87676
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) | 1920-12-17 | 1921-06-18 | 1921-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-12-17 | 1925-06-18 | 1925-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-12-17 | 1929-06-18 | 1929-12-18 | $7700.00 | Window Closed / Lapsed |