Patent US2191907A successfully refreshed from Google Patents.
US2191907A
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US
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Hydraulic mechanical speed transmission
Assignee: Individual
•
Filing: 1937-04-03
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Granted: 1940-02-27
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Expires: 1957-04-03
Abstract
No abstract record available.
Inventors
- 👤 Filippis Raymond De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:33
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/02; F16H61/0262; F16H2718/00; F16H2718/08; F16H2718/10; F16H2718/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-02-26 | 1943-08-28 | 1944-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-02-26 | 1947-08-28 | 1948-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-02-26 | 1951-08-28 | 1952-02-27 | $7700.00 | Window Closed / Lapsed |