Patent US2446908A successfully refreshed from Google Patents.
US2446908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark plug manufacture
Assignee: Motors Liquidation Co
•
Filing: 1943-11-01
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Granted: 1948-08-10
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Expires: 1963-11-01
Abstract
No abstract record available.
Inventors
- 👤 Corbin Douglas Haynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:04
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/06; H; H01; H01T; H01T21/00; H01T21/02
Claims Analysis
Total Claims: 0
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US1927467A
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US2270822A
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US2292598A
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US2273615A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |