US3436986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch-controlled,two-speed,power-transmitting mechanism
Assignee: LAWRENCE AND SCHILD Ltd
•
Filing: 1966-07-19
•
Granted: 1969-04-08
•
Expires: 1986-07-19
Abstract
No abstract record available.
Inventors
- 👤 Frank L Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:16
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/62; F16H3/66; F16H3/46; F16H3/48; F16H3/52; F16H3/54; F16H61/00; F16H61/02; F16H61/0262; F16H2200/00; F16H2200/003; F16H2200/0034; F16H2200/20; F16H2200/2002; F16H2200/201; F16H2716/00; F16H2716/04; F16H61/68; F16H61/684; F16H61/686
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2624215A
Cited
US2932216A
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US3021729A
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US3255643A
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US3234821A
Cited
US3137182A
Cited
US3236347A
Cited
US3290962A
Cited
US3228501A
Cited
US3347113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |