US2705019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate valve
Assignee: Individual
•
Filing: 1950-07-08
•
Granted: 1955-03-29
•
Expires: 1970-07-08
Abstract
No abstract record available.
Inventors
- 👤 Alexander S Volpin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:21
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/04; F16K27/044; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6065; Y10T137/6072; Y10T137/6075; Y10T137/6079
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US397751A
Cited
US773642A
Cited
US1160790A
Cited
US1593325A
Cited
US1586345A
Cited
US1647734A
Cited
US1611844A
Cited
US1898935A
Cited
US1871965A
Cited
CH178851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |