US2679302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive lock for hand propelled vehicles for public hire
Assignee: Individual
•
Filing: 1951-01-29
•
Granted: 1954-05-25
•
Expires: 1971-01-29
Abstract
No abstract record available.
Inventors
- 👤 Robert A Watson
- 👤 George E Riemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:02
CPC Classifications
B; B62; B62B; B62B3/00; B62B3/14; B62B3/1404; B62B5/00; B62B5/04; B62B5/0404; B62B5/0457; B62B5/0461
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US422245A
Cited
US1651377A
Cited
US698335A
Cited
GB190906180A
Cited
US1196724A
Cited
US1141100A
Cited
US1331513A
Cited
US2139523A
Cited
US2106042A
Cited
US2152903A
Cited
US2198058A
Cited
US2552675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |