US2578151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mast turning gear mechanism
Assignee: RONFELDT ASSOCIATES Inc
•
Filing: 1950-09-19
•
Granted: 1951-12-11
•
Expires: 1970-09-19
Abstract
No abstract record available.
Inventors
- 👤 Howard W Ronfeldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:13
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/02; H01Q3/04; G; G05; G05G; G05G7/00; G05G7/02; G05G7/10; G05G2700/00; G05G2700/20; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19828
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |