US2938707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hoisting mechanism
Assignee: Individual
•
Filing: 1958-04-01
•
Granted: 1960-05-31
•
Expires: 1978-04-01
Abstract
No abstract record available.
Inventors
- 👤 Allenbaugh Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:24
CPC Classifications
E; E04; E04G; E04G3/00; E04G3/28; E04G3/30; E04G3/32; B; B66; B66D; B66D1/00; B66D1/60; B66D1/74; B66D1/7405
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US706962A
Cited
US1682083A
Cited
US1917691A
Cited
US2493727A
Cited
US2625373A
Cited
US2662734A
Cited
US2756947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |