US2662408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic pressure indicator
Assignee: Pure Oil Co
•
Filing: 1947-10-18
•
Granted: 1953-12-15
•
Expires: 1967-10-18
Abstract
No abstract record available.
Inventors
- 👤 Lynn E Ellison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:08
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/12; G01L23/00; G01L23/08; G01L23/12; G01L23/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2117894A
Cited
US2177528A
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US2297346A
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US2371040A
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US2361634A
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US2371373A
Cited
US2439047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |