Patent US2837060A successfully refreshed from Google Patents.
US2837060A
Expired / Lapsed
US
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Speed control device
Assignee: Perfect Circle Corp
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Filing: 1953-12-15
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Granted: 1958-06-03
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Expires: 1973-12-15
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Teetor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:10
CPC Classifications
G; G05; G05D; G05D13/00; G05D13/08; G05D13/10; F; F02; F02D; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0225; F02D2700/0228; F02D2700/023; F02D2700/0238
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1304286A
Cited
US1231261A
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US1833908A
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US2111284A
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US2292805A
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US2560914A
Cited
US2529437A
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US2519859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |