Patent US2417218A successfully refreshed from Google Patents.
US2417218A
Expired / Lapsed
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Rotary variable-speed hydraulic transmission
Assignee: GEN ENGINEERING Co CANADA
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Filing: 1942-09-16
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Granted: 1947-03-11
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Expires: 1962-09-16
Abstract
No abstract record available.
Inventors
- 👤 Robert S Segsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:32
CPC Classifications
F; F16; F16H; F16H39/00; F16H39/04; F16H39/06; F16H39/26; F16H39/30; F16H39/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1726481A
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US1777851A
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US2393479A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-10 | 1950-09-09 | 1951-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-10 | 1954-09-09 | 1955-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-10 | 1958-09-09 | 1959-03-11 | $7700.00 | Window Closed / Lapsed |