US2634945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring yoke for valves
Assignee: Individual
•
Filing: 1947-06-07
•
Granted: 1953-04-14
•
Expires: 1967-06-07
Abstract
No abstract record available.
Inventors
- 👤 Hobbs James Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:09
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/08; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7737
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US23658A
Cited
US130570A
Cited
US155699A
Cited
DE627866C
Cited
GB190022349A
Cited
US1246892A
Cited
US1667590A
Cited
US2119851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |