US2880753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulator valve
Assignee: ARTHUR H KAPLAN
•
Filing: 1955-07-05
•
Granted: 1959-04-07
•
Expires: 1975-07-05
Abstract
No abstract record available.
Inventors
- 👤 James M Wilkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:26
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0655; Y; Y10; Y10T; Y10T137/00; Y10T137/794; Y10T137/8085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US595540A
Cited
US986678A
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US1159431A
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FR609101A
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US1833944A
Cited
US1847068A
Cited
US2152781A
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US2519805A
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US2639194A
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US2737975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |