Patent US2963259A successfully refreshed from Google Patents.
US2963259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metering valve
Assignee: Individual
•
Filing: 1957-09-09
•
Granted: 1960-12-06
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Expires: 1977-09-09
Abstract
No abstract record available.
Inventors
- 👤 William T Heyer
- 👤 Kepka Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:36
CPC Classifications
F; F16; F16K; F16K21/00; F16K21/04; F16K21/16; Y; Y10; Y10T; Y10T137/00; Y10T137/7504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US306349A
Cited
US1304311A
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US1856664A
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US2285343A
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US2315948A
Cited
US2552479A
Cited
US2570854A
Cited
US2816569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |