US2547665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanded scale direct-current meas
Assignee: —
•
Filing: —
•
Granted: 1951-04-03
•
Expires: 1968-04-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:56
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/02; G01R15/00; G01R15/14; G01R15/18; G01R15/183; G01R15/185; G01R5/00; G01R5/02; G01R5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB514349A
Cited
US1782588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |