US2431087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic gauging device
Assignee: Sheffield Corp
•
Filing: 1943-12-27
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Granted: 1947-11-18
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Expires: 1963-12-27
Abstract
No abstract record available.
Inventors
- 👤 Subber Leonard Saul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:37
CPC Classifications
G; G01; G01B; G01B13/00; G01B13/08; Y; Y10; Y10S; Y10S33/00; Y10S33/02; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49679; Y10T29/49682; Y10T29/49764; Y10T29/49771
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US201798A
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US724963A
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US1049860A
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US1446149A
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US1971271A
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US1921997A
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US2011931A
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US2124014A
Cited
US2139282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |