US1497206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulating valve control for internal-combustion engines
Assignee: Individual
•
Filing: 1919-12-23
•
Granted: 1924-06-10
•
Expires: 1939-12-23
Abstract
No abstract record available.
Inventors
- 👤 John G Booton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:47
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/08; F16H25/10; F01; F01L; F01L13/00; F01L13/0015; F01L13/0036; F01L13/0042; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101; Y10T74/2102
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1927-06-10 | 1927-12-10 | 1928-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-06-10 | 1931-12-10 | 1932-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-06-10 | 1935-12-10 | 1936-06-10 | $7700.00 | Window Closed / Lapsed |