US2803150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential gear locking mechanism
Assignee: Individual
•
Filing: 1955-06-22
•
Granted: 1957-08-20
•
Expires: 1975-06-22
Abstract
No abstract record available.
Inventors
- 👤 Robert F Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:19
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/02; F16H57/037; F16H48/00; F16H48/06; F16H48/08; F16H48/20; F16H48/24; F16H48/30; F16H48/34; F16H2048/204; F16H2048/305; F16H2048/346; F16H48/38; F16H2048/385; F16H48/40; F16H2048/405; F16H48/42; F16H2048/423; F16H2048/426; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20256
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1280535A
Cited
US1646020A
Cited
DE459638C
Cited
US1786492A
Cited
US2090614A
Cited
US2180597A
Cited
US2234890A
Cited
FR1097529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |