US2499219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-speed drive mechanism
Assignee: Individual
•
Filing: 1947-02-27
•
Granted: 1950-02-28
•
Expires: 1967-02-27
Abstract
No abstract record available.
Inventors
- 👤 George T Hemmeter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:16
CPC Classifications
F; F16; F16H; F16H9/00; F16H9/02; F16H9/04; F16H9/12; F16H37/00; F16H2700/00; F16H2700/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1274891A
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US1460622A
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US1913226A
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DE535116C
Cited
US2191200A
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US2215831A
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US2254592A
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US2283267A
Cited
US2311993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |