Patent US2852116A successfully refreshed from Google Patents.
US2852116A
Expired / Lapsed
US
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Friction clutch structure
Assignee: Lipe Rollway Corp
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Filing: 1955-05-02
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Granted: 1958-09-16
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Expires: 1975-05-02
Abstract
No abstract record available.
Inventors
- 👤 Charles B Spase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:28
CPC Classifications
F; F16; F16D; F16D23/00; F16D23/12; F16D13/00; F16D13/22; F16D13/38; F16D13/40; F16D13/42; F16D13/44; F16D2023/123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US203808A
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US1010366A
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US1963364A
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US2144024A
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US2485741A
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US2771977A
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US2714437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |