US3057977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow switches
Assignee: Raytheon Co
•
Filing: 1959-11-27
•
Granted: 1962-10-09
•
Expires: 1979-11-27
Abstract
No abstract record available.
Inventors
- 👤 John R Caswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:26
CPC Classifications
G; G01; G01P; G01P13/00; G01P13/0006; G01P13/0013; G01P13/002; H; H01; H01H; H01H35/00; H01H35/24; H01H35/40; H01H35/405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2419942A
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US2628297A
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US2772409A
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US2791657A
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US2862076A
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US2963563A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |