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US2819034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate valve
Assignee: Individual
•
Filing: 1955-06-03
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Granted: 1958-01-07
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Expires: 1975-06-03
Abstract
No abstract record available.
Inventors
- 👤 Oscar C Holderer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:47
CPC Classifications
F; F16; F16K; F16K39/00; F16K39/04; G; G01; G01M; G01M9/00; G01M9/02; G01M9/04; Y; Y10; Y10T; Y10T137/00; Y10T137/6198
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US191078A
Cited
US824681A
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US1958262A
Cited
US2214195A
Cited
US2520893A
Cited
US2668685A
Cited
US2707483A
Cited
US2698516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |