US2644340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double countershaft transmission
Assignee: Borg Warner Corp
•
Filing: 1949-06-11
•
Granted: 1953-07-07
•
Expires: 1969-06-11
Abstract
No abstract record available.
Inventors
- 👤 Harold T Youngren
- 👤 Jr Sidney V Hettinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:36
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/087; F16H3/093; F16H3/097; F16H3/006; F16H2200/00; F16H2200/003; F16H2200/0043; F16H2714/00; F16H2714/02; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19228; Y10T74/19377; Y10T74/19386; Y10T74/194
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB119098A
Cited
US2010161A
Cited
US2406318A
Cited
CH226366A
Cited
CH232801A
Cited
US2315808A
Cited
GB604178A
Cited
US2386540A
Cited
US2386541A
Cited
US2485688A
Cited
US2567042A
Cited
US2549738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |