Patent US2685059A successfully refreshed from Google Patents.
US2685059A
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Spark plug tester
Assignee: Motors Liquidation Co
•
Filing: 1949-02-11
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Granted: 1954-07-27
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Expires: 1969-02-11
Abstract
No abstract record available.
Inventors
- 👤 Earl W Pierce
- 👤 Skunda Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:15
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/58; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/18952
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1116118A
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US1151007A
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US1537270A
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US2175038A
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US2369920A
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US2295453A
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US2329035A
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US2401533A
Cited
US2574281A
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US2434969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |