US2653721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loading device
Assignee: Individual
•
Filing: 1950-10-20
•
Granted: 1953-09-29
•
Expires: 1970-10-20
Abstract
No abstract record available.
Inventors
- 👤 Hersel G Cantrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:20
CPC Classifications
A; A01; A01D; A01D87/00; A01D87/12; A01D87/122; B; B60; B60P; B60P1/00; B60P1/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2343133A
Cited
US2093300A
Cited
US2312779A
Cited
US2409143A
Cited
US2368353A
Cited
US2551427A
Cited
US2543563A
Cited
US2541523A
Cited
US2594221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |