US2473250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual ratio gearing
Assignee: General Electric Co
•
Filing: 1948-09-10
•
Granted: 1949-06-14
•
Expires: 1968-09-10
Abstract
No abstract record available.
Inventors
- 👤 Herbert N Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:15
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/003; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19172; Y10T74/19177; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19442; Y10T74/19447
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR687056A
Cited
US2451767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |