Patent US2206894A successfully refreshed from Google Patents.
Patent US2449863A successfully refreshed from Google Patents.
US2449863A
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US
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Load lifting appliance
Assignee: WEAVER Manufacturing Co
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Filing: 1945-03-31
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Granted: 1948-09-21
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Expires: 1965-03-31
Abstract
No abstract record available.
Inventors
- 👤 William A Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:49
CPC Classifications
B; B66; B66F; B66F7/00; B66F7/06; B66F7/08; B62; B62B; B62B3/00; B62B3/04; B62B3/06; B62B3/0618; B66F7/0625; B66F7/0691
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |