Patent US2617850A successfully refreshed from Google Patents.
US2617850A
Expired / Lapsed
US
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Sealed insulator bushing
Assignee: Individual
•
Filing: 1949-04-05
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Granted: 1952-11-11
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Expires: 1969-04-05
Abstract
No abstract record available.
Inventors
- 👤 Carmichael Hugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:47
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/32; H01J5/40; H01J5/42; H01J2893/00; H01J2893/0033; H01J2893/0034; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49227; Y10T403/00; Y10T403/47; Y10T403/477
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US651063A
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US1129603A
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US1483022A
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US1680681A
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US2018056A
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US2304334A
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US2287976A
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US2398708A
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US2371486A
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US2390404A
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US2376219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |