Patent US3959200A successfully refreshed from Google Patents.
US2648030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed condenser and shield for spark plugs
Assignee: Individual
•
Filing: 1951-04-23
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Granted: 1953-08-04
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Expires: 1971-04-23
Abstract
No abstract record available.
Inventors
- 👤 Elmer C Kiekhaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:34
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)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |