US2986160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pinch valves
Assignee: Union Carbide Corp
•
Filing: 1958-12-08
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Granted: 1961-05-30
•
Expires: 1978-12-08
Abstract
No abstract record available.
Inventors
- 👤 Byron H Acomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:43
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/06; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7805; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18176; Y10T74/18182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1120002A
Cited
US1223586A
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US1725679A
Cited
US1753662A
Cited
US2183835A
Cited
US2409768A
Cited
US2710162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |