US2969087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve mechanism
Assignee: Robertshaw US Holding Corp
•
Filing: 1954-10-19
•
Granted: 1961-01-24
•
Expires: 1974-10-19
Abstract
No abstract record available.
Inventors
- 👤 Estel C Raney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:38
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; F16K31/406; F16K31/408; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877; Y10T137/87708; Y10T137/87748
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US389099A
Cited
US787422A
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US850251A
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US1114431A
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US1989341A
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US1960144A
Cited
US2336653A
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US2379181A
Cited
US2446910A
Cited
US2640494A
Cited
US2635632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |