Patent US2621416A successfully refreshed from Google Patents.
US2589998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic control for monorail hoists or the like
Assignee: Individual
•
Filing: 1946-07-11
•
Granted: 1952-03-18
•
Expires: 1966-07-11
Abstract
No abstract record available.
Inventors
- 👤 Charles E Dougherty
- 👤 Edward E Minor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:13
CPC Classifications
B; B61; B61L; B61L23/00; B61L23/002; B61L23/005; B60; B60L; B60L15/00; B60L15/002; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1328865A
Cited
US2073443A
Cited
US1417062A
Cited
US1786815A
Cited
US1770805A
Cited
US2397088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |