US2876794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure responsive valve structure
Assignee: CHAMBERLIN PRODUCTS Corp
•
Filing: 1954-01-25
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Granted: 1959-03-10
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Expires: 1974-01-25
Abstract
No abstract record available.
Inventors
- 👤 Thomas D Reedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:09
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/14; F16K31/145; B; B60; B60H; B60H1/00; B60H1/00485; F16K15/00; F16K15/18; F16K15/182; F16K15/14; F16K15/144; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/7876
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1303472A
Cited
US2106775A
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US2559405A
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US2659566A
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US2659567A
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US2638929A
Cited
US2648518A
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US2777464A
Cited
US2764183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |