US2569014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve construction
Assignee: Individual
•
Filing: 1946-06-03
•
Granted: 1951-09-25
•
Expires: 1966-06-03
Abstract
No abstract record available.
Inventors
- 👤 Marion E Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:04
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1471229A
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US1912786A
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US2352629A
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US2366883A
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US2393805A
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US2392421A
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US2392422A
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US2376918A
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US2408562A
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US2435546A
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US2413757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |