US2640903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistance construction
Assignee: Aerovox Corp
•
Filing: 1950-07-15
•
Granted: 1953-06-02
•
Expires: 1970-07-15
Abstract
No abstract record available.
Inventors
- 👤 Wilbur M Kohring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:36
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/14; H01C1/146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1430927A
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US1783554A
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US2175686A
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US2232327A
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GB508836A
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US2385702A
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US2431965A
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US2487057A
Cited
US2537061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |