Patent US1904832A successfully refreshed from Google Patents.
US1904832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor power coupling mechanism
Assignee: Individual
•
Filing: 1930-09-27
•
Granted: 1933-04-18
•
Expires: 1950-09-27
Abstract
No abstract record available.
Inventors
- 👤 Carl G Allgrunn
- 👤 George F Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:26
CPC Classifications
F; F16; F16C; F16C3/00; F16C3/02; F16C3/03; A; A01; A01M; A01M9/00; B; B60; B60K; B60K25/00; B60K25/06; F23; F23D; F23D11/00; F23D11/36; F23D11/40
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) | 1936-04-17 | 1936-10-17 | 1937-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-04-17 | 1940-10-17 | 1941-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-04-17 | 1944-10-17 | 1945-04-18 | $7700.00 | Window Closed / Lapsed |