US2765143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Individual
•
Filing: 1951-08-14
•
Granted: 1956-10-02
•
Expires: 1971-08-14
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Best
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:09
CPC Classifications
F; F16; F16K; F16K27/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US713851A
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US820846A
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US920187A
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US1066240A
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US1172474A
Cited
US1270049A
Cited
US1341146A
Cited
GB168960A
Cited
US1552710A
Cited
US1717392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |