US2952269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable core-type valve
Assignee: Individual
•
Filing: 1955-11-28
•
Granted: 1960-09-13
•
Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 Theodore A Stehlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:30
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/528; F16K31/5286; Y; Y10; Y10T; Y10T137/00; Y10T137/5109; Y10T137/5196; Y10T137/8593; Y10T137/86493; Y10T137/86831
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732848A
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US1441784A
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US2124359A
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US2427530A
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US2237014A
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US2501635A
Cited
US2490944A
Cited
US2531759A
Cited
US2662721A
Cited
US2670173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |