US2646151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch plate
Assignee: SK Wellman Corp
•
Filing: 1947-08-09
•
Granted: 1953-07-21
•
Expires: 1967-08-09
Abstract
No abstract record available.
Inventors
- 👤 Samuel K Wellman
- 👤 Francis J Lowey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:50
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/60; F16D13/64; F16D13/68; F16D2013/642; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984; Y10T428/00; Y10T428/12; Y10T428/12347; Y10T428/12354
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1561041A
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US1479973A
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US1479974A
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US1836112A
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US1971665A
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US2141014A
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US2284278A
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US2244134A
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US2327834A
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US2432342A
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US2519865A
Cited
US2520350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |