Patent US2420897A successfully refreshed from Google Patents.
US2420897A
Expired / Lapsed
US
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Shielded spark plug connector
Assignee: FLEX O TUBE Co
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Filing: 1944-02-21
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Granted: 1947-05-20
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Expires: 1964-02-21
Abstract
No abstract record available.
Inventors
- 👤 Thomas W Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:09
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/02; H01T13/04; H01T13/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US986217A
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US2296054A
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US1962968A
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US1942259A
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US2024814A
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US2015477A
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US2081503A
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US2312757A
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US2310575A
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US2356053A
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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) | 1950-05-19 | 1950-11-18 | 1951-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-19 | 1954-11-18 | 1955-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-19 | 1958-11-18 | 1959-05-20 | $7700.00 | Window Closed / Lapsed |