US2471901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load-lifting appliance
Assignee: WEAVER Manufacturing Co
•
Filing: 1945-04-25
•
Granted: 1949-05-31
•
Expires: 1965-04-25
Abstract
No abstract record available.
Inventors
- 👤 William A Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:42
CPC Classifications
B; B66; B66F; B66F7/00; B66F7/06; B66F7/065; B66F7/0625; B66F7/0666; B66F7/0691; B66F7/08; B66F7/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR453168A
Cited
US1838842A
Cited
US1937062A
Cited
US2132343A
Cited
US2201189A
Cited
US2340764A
Cited
US2351846A
Cited
US2449863A
Cited
US2402579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |