US1777971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic braking-air-admission valve for automobile engines
Assignee: Individual
•
Filing: 1926-12-06
•
Granted: 1930-10-07
•
Expires: 1946-12-06
Abstract
No abstract record available.
Inventors
- 👤 Huffam Gordon Stanley Crossley
- 👤 Bergin Edmund Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:12
CPC Classifications
F; F01; F01L; F01L13/00; F01L2760/00; F01L2760/003; F01L2760/004
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) | 1933-10-06 | 1934-04-07 | 1934-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-10-06 | 1938-04-07 | 1938-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-10-06 | 1942-04-07 | 1942-10-07 | $7700.00 | Window Closed / Lapsed |