US2963908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for impedance measurements
Assignee: Sunoco Inc
•
Filing: 1955-04-19
•
Granted: 1960-12-13
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Expires: 1975-04-19
Abstract
No abstract record available.
Inventors
- 👤 Shawhan Elbert Neil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:32
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/26; G01F23/263; G01F23/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2735301A
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US1124055A
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US1504978A
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US2233297A
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US2289202A
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US2544012A
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US2505072A
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US2456499A
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US2589714A
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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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |