US3019874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic two-speed drives for automobile accessories
Assignee: Heckethorn Manufacturing and Supply Co
•
Filing: 1958-09-15
•
Granted: 1962-02-06
•
Expires: 1978-09-15
Abstract
No abstract record available.
Inventors
- 👤 John E Heckethorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:07
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/66; F16H61/662; F16H61/66231; F16H61/66245; F01; F01P; F01P7/00; F01P7/02; F01P7/04; F01P7/046; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19256; Y10T74/1926; Y10T74/1927; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19442; Y10T74/19447
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2075078A
Cited
US1983827A
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US2212731A
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US2388424A
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US2477176A
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US2529919A
Cited
US2762482A
Cited
US2860519A
Cited
US2955478A
Cited
US2911962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |