US2370856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material handling apparatus
Assignee: American Hoist and Derrick Co
•
Filing: 1942-03-14
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Granted: 1945-03-06
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Expires: 1962-03-14
Abstract
No abstract record available.
Inventors
- 👤 Donald C Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:38
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/20; H01F7/206; B; B66; B66C; B66C7/00; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0328; B66C2700/035
Claims Analysis
Total Claims: 0
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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) | 1948-03-05 | 1948-09-04 | 1949-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-03-05 | 1952-09-04 | 1953-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-03-05 | 1956-09-04 | 1957-03-06 | $7700.00 | Window Closed / Lapsed |