Patent US2545834A successfully refreshed from Google Patents.
US2545834A
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US
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Assignee: Individual
•
Filing: 1947-02-15
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Granted: 1951-03-20
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Expires: 1967-02-15
Abstract
No abstract record available.
Inventors
- 👤 James V Westbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:51
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/04; F16K5/0457; F16K5/0478
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US810951A
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US862143A
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US1645785A
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US1872417A
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US2017975A
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US2121031A
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US2114789A
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US2175074A
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US2233074A
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US2263584A
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US2433732A
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US2372869A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |