US2416643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark plug
Assignee: Individual
•
Filing: 1945-04-03
•
Granted: 1947-02-25
•
Expires: 1965-04-03
Abstract
No abstract record available.
Inventors
- 👤 Carlton H Rinehart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:46
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/46; H01T13/467
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2150723A
Cited
US2318922A
Cited
US1052170A
Cited
US1264870A
Cited
FR601191A
Cited
FR787591A
Cited
US2081500A
Cited
US2292216A
Cited
US2356104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-24 | 1950-08-26 | 1951-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-24 | 1954-08-26 | 1955-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-24 | 1958-08-26 | 1959-02-25 | $7700.00 | Window Closed / Lapsed |