US1500668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon motor
Assignee: Packard Motor Car Co
•
Filing: 1918-04-29
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Granted: 1924-07-08
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Expires: 1938-04-29
Abstract
No abstract record available.
Inventors
- 👤 Harold D Church
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:18
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/02; F01P3/12; F02; F02B; F02B2275/00; F02B2275/22
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) | 1927-07-08 | 1928-01-07 | 1928-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-07-08 | 1932-01-07 | 1932-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-07-08 | 1936-01-07 | 1936-07-08 | $7700.00 | Window Closed / Lapsed |