US3491619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow transmission
Assignee: Voith Getriebe KG
•
Filing: 1967-08-07
•
Granted: 1970-01-27
•
Expires: 1987-08-07
Abstract
No abstract record available.
Inventors
- 👤 Rolf Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:18
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/07; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19033; Y10T74/19037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2213349A
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US2142269A
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FR891638A
Cited
CH238021A
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FR992734A
Cited
US2568275A
Cited
US3169371A
Cited
US3176544A
Cited
US3373634A
Cited
US3383951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |