US2992401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug-in busduct
Assignee: Frank Adam Electric Co
•
Filing: 1957-11-06
•
Granted: 1961-07-11
•
Expires: 1977-11-06
Abstract
No abstract record available.
Inventors
- 👤 Harold A Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:16
CPC Classifications
H; H02; H02G; H02G5/00; H02G5/06; H02G5/08; H01; H01R; H01R13/00; H01R13/44; H01R13/447; H01R13/453; H01R13/4538; H01R13/62; H01R13/629; H01R13/631; H01R25/00; H01R25/14; H01R25/145; Y; Y10; Y10S; Y10S439/00; Y10S439/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1992816A
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US1965087A
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US1958539A
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US1962554A
Cited
US2041344A
Cited
US2088105A
Cited
US2312580A
Cited
US2318860A
Cited
US2720632A
Cited
US2725541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |