US2542905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring pressure
Assignee: Individual
•
Filing: 1945-10-11
•
Granted: 1951-02-20
•
Expires: 1965-10-11
Abstract
No abstract record available.
Inventors
- 👤 Cromer Sylvan
- 👤 Jr Eugene T Booth
- 👤 Fred L Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:24
CPC Classifications
G; G01; G01L; G01L19/00; G01L19/06; G01L19/0627; G01L19/0645; G01L11/00; G01L11/004; G01L11/006; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1631909A
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US1747153A
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FR715429A
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US1938492A
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US1957106A
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US2092844A
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US2223712A
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US2265114A
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US2257577A
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US2362874A
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US2320881A
Cited
US2369463A
Cited
US2374945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |