US2959703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark plug
Assignee: Individual
•
Filing: 1958-02-20
•
Granted: 1960-11-08
•
Expires: 1978-02-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur C Hastings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:02
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/20; H01T13/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US918726A
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US916313A
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US1192602A
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US1962968A
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US1977938A
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US2069951A
Cited
US2311647A
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US2356053A
Cited
US2309236A
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US2351543A
Cited
US2453048A
Cited
US2633116A
Cited
US2833950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |