US2436874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction clutch
Assignee: Lipe Rollway Corp
•
Filing: 1944-10-12
•
Granted: 1948-03-02
•
Expires: 1964-10-12
Abstract
No abstract record available.
Inventors
- 👤 Charles B Spase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:44
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/70; F16D13/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2058863A
Cited
US2081824A
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US2138129A
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US2146044A
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US2204879A
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US2230520A
Cited
US2296957A
Cited
US2349996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-02 | 1951-09-01 | 1952-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-02 | 1955-09-01 | 1956-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-02 | 1959-09-01 | 1960-03-02 | $7700.00 | Window Closed / Lapsed |