US2708562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve plug retaining device
Assignee: ARTHUR H THOMAS CO
•
Filing: 1951-02-05
•
Granted: 1955-05-17
•
Expires: 1971-02-05
Abstract
No abstract record available.
Inventors
- 👤 Leopold J Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:38
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1304150A
Cited
US967460A
Cited
GB500661A
Cited
US2334801A
Cited
US2420061A
Cited
US2586453A
Cited
US2621887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |