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Patent US2689949A successfully refreshed from Google Patents.
US2689949A
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Telementering system
Assignee: United States Atomic Energy Commission
•
Filing: 1952-05-15
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Granted: 1954-09-21
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Expires: 1972-05-15
Abstract
No abstract record available.
Inventors
- 👤 John F Kalbach
- 👤 Johnstone Charles Wilkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:15
CPC Classifications
G; G01; G01R; G01R15/00; G01R15/14; G01R15/22; G08; G08C; G08C23/00; G08C23/04; H; H04; H04B; H04B10/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2485584A
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US2504975A
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US2567862A
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US2499613A
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US2468703A
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US2537056A
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US2564824A
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US2578643A
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US2607035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |