US2873340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable resistor
Assignee: BOURNS LAB Inc
•
Filing: 1956-12-28
•
Granted: 1959-02-10
•
Expires: 1976-12-28
Abstract
No abstract record available.
Inventors
- 👤 Marlan E Bourns
- 👤 Wilbur T Hardison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:26
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; H; H01; H01C; H01C10/00; H01C10/14; Y; Y10; Y10S; Y10S74/00; Y10S74/10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18088; Y10T74/18128; Y10T74/18136; Y10T74/18568; Y10T74/18576; Y10T74/18656; Y10T74/18752; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US428639A
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US1912390A
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US2454340A
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US2430458A
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US2491543A
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US2551793A
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US2697356A
Cited
US2777926A
Cited
GB759398A
Cited
US2751475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |