US1874238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel control mechanism
Assignee: AT&T Inc
•
Filing: 1927-12-28
•
Granted: 1932-08-30
•
Expires: 1947-12-28
Abstract
No abstract record available.
Inventors
- 👤 Vincent T Callahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:20
CPC Classifications
F; F02; F02M; F02M21/00; F02B; F02B43/00; F02M2700/00; F02M2700/12; F02M2700/126; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87643; Y10T137/87652; Y10T137/8766; Y10T137/87668; Y10T137/87676; Y10T137/87684; Y10T137/87692
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) | 1935-08-30 | 1936-02-29 | 1936-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-08-30 | 1940-02-29 | 1940-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-08-30 | 1944-02-29 | 1944-08-30 | $7700.00 | Window Closed / Lapsed |