Patent US2684060A successfully refreshed from Google Patents.
US2684060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark plug
Assignee: Individual
•
Filing: 1950-10-18
•
Granted: 1954-07-20
•
Expires: 1970-10-18
Abstract
No abstract record available.
Inventors
- 👤 Schechter Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:33
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/46; H01T13/467
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1305660A
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US853425A
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US790571A
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US1132811A
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US1156799A
Cited
US1287570A
Cited
GB150444A
Cited
GB206405A
Cited
US1537938A
Cited
GB433717A
Cited
US2163362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |