US3468511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-hunting diaphragm valves
Assignee: Robertshaw Controls Co
•
Filing: 1966-12-19
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Granted: 1969-09-23
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Expires: 1986-12-19
Abstract
No abstract record available.
Inventors
- 👤 Lauren D Haskins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:27
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0638; G05D16/0641; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US1986475A
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US2394911A
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US2638127A
Cited
US2707481A
Cited
US2683464A
Cited
US3034761A
Cited
US3307633A
Cited
US3282556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |