Patent US3068459A successfully refreshed from Google Patents.
US3068459A
Expired / Lapsed
US
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Apparatus for indicating the liquid or gaseous state of a fluid
Assignee: General Dynamics Corp
•
Filing: 1957-04-04
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Granted: 1962-12-11
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Expires: 1977-04-04
Abstract
No abstract record available.
Inventors
- 👤 Robert I Kreisler
- 👤 Jr William E Evans
- 👤 Donald L Skaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:52
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/18; G01N27/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2468676A
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US2659067A
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US2799851A
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US2783341A
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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) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |