Patent US2597338A successfully refreshed from Google Patents.
US2597338A
Expired / Lapsed
US
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Resistance
Assignee: WILKOR PRODUCTS Inc
•
Filing: 1950-05-11
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Granted: 1952-05-20
•
Expires: 1970-05-11
Abstract
No abstract record available.
Inventors
- 👤 Wilbur M Kohring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/14; H01C1/142; H01R; H01R4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US414090A
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US1430927A
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US2244548A
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US2282398A
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US2361405A
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US2385702A
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US2487057A
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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) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |