Patent US2438696A successfully refreshed from Google Patents.
US2438696A
Expired / Lapsed
US
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Continuous air gage
Assignee: Niles Bement Pond Co
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Filing: 1945-11-21
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Granted: 1948-03-30
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Expires: 1965-11-21
Abstract
No abstract record available.
Inventors
- 👤 Raymond S Fox
- 👤 Charles A Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:00
CPC Classifications
G; G01; G01B; G01B13/00; G01B13/02; G01B13/06; G01B5/00; G01B5/02; G01B5/06; G01B5/068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-30 | 1951-09-29 | 1952-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-30 | 1955-09-29 | 1956-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-30 | 1959-09-29 | 1960-03-30 | $7700.00 | Window Closed / Lapsed |