Patent US4533585A successfully refreshed from Google Patents.
Patent US2860734A successfully refreshed from Google Patents.
US2860734A
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Brake and flexible coupling for rotary mechanisms
Assignee: Youngstown Sheet and Tube Co
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Filing: 1953-03-09
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Granted: 1958-11-18
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Expires: 1973-03-09
Abstract
No abstract record available.
Inventors
- 👤 Albert A Ashton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:11
CPC Classifications
E; E21; E21B; E21B3/00; E21B3/02; E21B3/04; E21B3/06; F; F16; F16D; F16D57/00; F16D57/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE622266C
Cited
US2331160A
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US2518481A
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US2498572A
Cited
US2712740A
Cited
US2645970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |