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Patent US2543878A successfully refreshed from Google Patents.
US2543878A
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US
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Fluid controlled transmission
Assignee: Individual
•
Filing: 1949-01-11
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Granted: 1951-03-06
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Expires: 1969-01-11
Abstract
No abstract record available.
Inventors
- 👤 Virgil F Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:03
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/72; F16H3/721; F16D; F16D33/00; F16D67/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB212925A
Cited
US1764849A
Cited
US1888881A
Cited
GB442562A
Cited
FR794008A
Cited
US2284934A
Cited
US2315130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |