US2999995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanically variable resistor
Assignee: Bourns Inc
•
Filing: 1957-05-20
•
Granted: 1961-09-12
•
Expires: 1977-05-20
Abstract
No abstract record available.
Inventors
- 👤 Marlan E Bourns
- 👤 Carl N Boode
- 👤 Edward D O'brian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:26
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/40; H01C10/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1043272A
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US2130115A
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US2178241A
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US2548591A
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US2850607A
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US2870302A
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US2892171A
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US2895116A
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US2870304A
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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) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |