US2866141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensing devices
Assignee: Franklin Institute
•
Filing: 1954-06-23
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Granted: 1958-12-23
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Expires: 1974-06-23
Abstract
No abstract record available.
Inventors
- 👤 Wallace E Frank
- 👤 Jr John J Boericke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:11
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/0061; G01L5/0076; G01L5/008; G01L1/00; G01L1/14; G01L1/142; G01L1/146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1584613A
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US1647474A
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US1763771A
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US2185777A
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US2436946A
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US2654060A
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US2571507A
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US2755796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |