US2872641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital meter
Assignee: Actron Industries Inc
•
Filing: 1954-09-15
•
Granted: 1959-02-03
•
Expires: 1974-09-15
Abstract
No abstract record available.
Inventors
- 👤 Harold R Hudson
- 👤 William Q Nicholson
- 👤 Wilson Merton Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:34
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/02; G01R17/04; G01R1/00; G01R1/30; H; H03; H03K; H03K5/00; H03K5/22; H03K5/24; H03M; H03M1/00; H03M1/12; H03M1/48; H03M1/485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2470644A
Cited
US2478966A
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US2473334A
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US2643344A
Cited
US2632886A
Cited
US2668264A
Cited
US2697191A
Cited
US2806207A
Cited
US2786169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |