US2921697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hoisting apparatus
Assignee: Ernest Holmes Co
•
Filing: 1956-01-03
•
Granted: 1960-01-19
•
Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Ernest W Holmes
- 👤 Earl E Cline
- 👤 Gerald E Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:25
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62; B66C23/64; B66C23/70; B66C23/18; B66C23/36; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US290780A
Cited
US570124A
Cited
US844990A
Cited
US1732047A
Cited
US2168837A
Cited
US2264569A
Cited
US2503340A
Cited
US2516364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |