US2248415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark plug electrode seal
Assignee: Motors Liquidation Co
•
Filing: 1940-07-03
•
Granted: 1941-07-08
•
Expires: 1960-07-03
Abstract
No abstract record available.
Inventors
- 👤 Schwartzwalder Karl
- 👤 Alexander S Rulka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:38
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/20; H01T13/34; Y; Y10; Y10T; Y10T403/00; Y10T403/47; Y10T403/477
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-07-07 | 1945-01-06 | 1945-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-07-07 | 1949-01-06 | 1949-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-07-07 | 1953-01-06 | 1953-07-08 | $7700.00 | Window Closed / Lapsed |