US2874989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for hoists
Assignee: Ingersoll Rand Co
•
Filing: 1955-04-27
•
Granted: 1959-02-24
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Expires: 1975-04-27
Abstract
No abstract record available.
Inventors
- 👤 Harold C Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:57
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/02; B66C1/0218; B66C1/0212; B66C1/0231; B66C1/0293; B66D; B66D3/00; B66D3/18; B66D2700/00; B66D2700/02; B66D2700/026; Y; Y10; Y10T; Y10T279/00; Y10T279/11
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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |