US2850606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable resistor
Assignee: ACTON LAB Inc
•
Filing: 1956-08-08
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Granted: 1958-09-02
•
Expires: 1976-08-08
Abstract
No abstract record available.
Inventors
- 👤 Frederick B Maclaren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:56
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/28; G01R31/317; G01R31/3181; G01R31/319; G01R31/31903; H; H01; H01C; H01C10/00; H01C10/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371159A
Cited
DE657865C
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DE759496C
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US2519752A
Cited
US2595189A
Cited
DE841768C
Cited
US2747061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |