US2540639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission
Assignee: Individual
•
Filing: 1945-05-11
•
Granted: 1951-02-06
•
Expires: 1965-05-11
Abstract
No abstract record available.
Inventors
- 👤 Martin P Winther
- 👤 Winther Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:35
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/02; F16H61/0202; F16H61/0204; F16H61/0206; F16H61/0211
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2045610A
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US1991124A
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US2045612A
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US2085607A
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US2150950A
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US2127655A
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GB509205A
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US2376545A
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US2229336A
Cited
US2259730A
Cited
US2343291A
Cited
US2306582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |