US2989084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exterior seal for differential pressure gages
Assignee: Individual
•
Filing: 1956-04-13
•
Granted: 1961-06-20
•
Expires: 1976-04-13
Abstract
No abstract record available.
Inventors
- 👤 Jones Barton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:43
CPC Classifications
G; G01; G01L; G01L7/00; G01L7/02; G01L7/06; G01L7/068; G01L13/00; G01L13/02; G01L13/023; G01L7/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2400048A
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US2466071A
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US2589291A
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US2700506A
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US2762391A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |