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US2496898A
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Assignee: LUDLOW VALVE MANUFACTURING Co Inc
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Filing: 1945-04-18
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Granted: 1950-02-07
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Expires: 1965-04-18
Abstract
No abstract record available.
Inventors
- 👤 Alfred W Thompson
- 👤 Edwin A Weinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:19
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US380940A
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US508246A
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US872184A
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US1822655A
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US2247773A
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US2265595A
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US2312290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |