US2829862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate valve
Assignee: Individual
•
Filing: 1954-04-14
•
Granted: 1958-04-08
•
Expires: 1974-04-14
Abstract
No abstract record available.
Inventors
- 👤 Wey Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:40
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/0281; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1801237A
Cited
US2064567A
Cited
US2298212A
Cited
US2329315A
Cited
US2420849A
Cited
US2410404A
Cited
US2401123A
Cited
US2600497A
Cited
US2669416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |