US2424909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupting device
Assignee: Frank Adam Electric Co
•
Filing: 1942-12-30
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Granted: 1947-07-29
•
Expires: 1962-12-30
Abstract
No abstract record available.
Inventors
- 👤 Frederick B Adam
- 👤 Floyd S Green
- 👤 Henry M Stieglitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:49
CPC Classifications
H; H01; H01H; H01H73/00; H01H73/48; H01H73/50; H01H71/00; H01H71/08; H01H1/00; H01H1/12; H01H1/14; H01H1/18; H01H1/58; H01H1/5822; H01H11/00; H01H11/0006; H01H9/00; H01H9/16; H01H9/30; H01H9/34; H01H9/342; H01H9/44; H01H9/446; Y; Y10; Y10T; Y10T74/00; Y10T74/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1809275A
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US1812845A
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US2061391A
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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) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |