US2765142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valves
Assignee: Individual
•
Filing: 1954-05-17
•
Granted: 1956-10-02
•
Expires: 1974-05-17
Abstract
No abstract record available.
Inventors
- 👤 Oscar H Ludeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:39
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/20; F16K5/204
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US596000A
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US1128228A
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US1656183A
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FR599176A
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GB335462A
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US2092452A
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FR785155A
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US2076839A
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GB540067A
Cited
GB561587A
Cited
US2577725A
Cited
US2587569A
Cited
US2663538A
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US2655942A
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 |