US2874322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low tension spark plug
Assignee: —
•
Filing: —
•
Granted: 1959-02-17
•
Expires: 1976-02-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:43
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/52; H01T13/20; H01T13/36; H01T13/46; H01T13/467; H01T21/00; H01T21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2786158A
Cited
US1100650A
Cited
FR528269A
Cited
US1940325A
Cited
US2168206A
Cited
US2248415A
Cited
US2507278A
Cited
US2527489A
Cited
US2605754A
Cited
US2684665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |