US2460686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical instrument
Assignee: Thomas A Edison Inc
•
Filing: 1944-01-04
•
Granted: 1949-02-01
•
Expires: 1964-01-04
Abstract
No abstract record available.
Inventors
- 👤 George H Fritzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:21
CPC Classifications
G; G01; G01R; G01R5/00; G01R5/14; G01R5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US408157A
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US496309A
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US2102409A
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US1531070A
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GB295714A
Cited
US2002445A
Cited
US2147482A
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GB516452A
Cited
US2339021A
Cited
US2260026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-01 | 1952-08-02 | 1953-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-01 | 1956-08-02 | 1957-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-01 | 1960-08-02 | 1961-02-01 | $7700.00 | Window Closed / Lapsed |