Patent US2473241A successfully refreshed from Google Patents.
US2473241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spabking plug
Assignee: —
•
Filing: —
•
Granted: 1949-06-14
•
Expires: 1966-06-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:14
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/20; H01T13/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2047031A
Cited
US2079561A
Cited
US2150723A
Cited
GB190206139A
Cited
US1352089A
Cited
US2312757A
Cited
US2238397A
Cited
US2280855A
Cited
US2351564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |