US2777030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid level indicator
Assignee: Individual
•
Filing: 1953-06-08
•
Granted: 1957-01-08
•
Expires: 1973-06-08
Abstract
No abstract record available.
Inventors
- 👤 Jack E Macgriff
- 👤 Marilyn L Bacon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:15
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/56; G01F23/60; F; F01; F01L; F01L1/00; G01F23/32; G01F23/36; F01L2710/00; F01L2710/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1323113A
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US1324191A
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US1244667A
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US1392652A
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US1745031A
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US1984670A
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US2214008A
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US2146729A
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US2327373A
Cited
US2524274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |