Patent US2423103A successfully refreshed from Google Patents.
US2423103A
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System for measuring frequency deviations
Assignee: International Standard Electric Corp
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Filing: 1943-06-22
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Granted: 1947-07-01
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Expires: 1963-06-22
Abstract
No abstract record available.
Inventors
- 👤 Koechlin Renaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:02
CPC Classifications
G; G04; G04D; G04D7/00; G04D7/12; G04D7/1207; G04D7/1235; G04D7/125; G01; G01R; G01R25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-30 | 1950-12-30 | 1951-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-30 | 1954-12-30 | 1955-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-30 | 1958-12-30 | 1959-07-01 | $7700.00 | Window Closed / Lapsed |