US2508719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch for engine-driven generators
Assignee: Individual
•
Filing: 1948-03-29
•
Granted: 1950-05-23
•
Expires: 1968-03-29
Abstract
No abstract record available.
Inventors
- 👤 Lee M Kern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:34
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/10; B23K9/1006; B23K9/1012; B23K9/1031
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1408221A
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US1444425A
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US1528364A
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US1883766A
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US2025097A
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US2139931A
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US2223692A
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US2446855A
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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) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |