US2798140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistance coatings
Assignee: Individual
•
Filing: 1953-04-06
•
Granted: 1957-07-02
•
Expires: 1973-04-06
Abstract
No abstract record available.
Inventors
- 👤 Wilbur M Kohring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:12
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/075; H01C17/08; H01C10/00; H01C10/24; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1859344A
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US2118072A
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US2441960A
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US2442469A
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US2381463A
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US2542726A
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US2418804A
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US2599710A
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US2501126A
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US2688679A
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US2616994A
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US2537671A
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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) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |