Patent US2698410A successfully refreshed from Google Patents.
US2698410A
Expired / Lapsed
US
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Information recording and reproducing system
Assignee: Beckman Coulter Inc
•
Filing: 1950-06-15
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Granted: 1954-12-28
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Expires: 1970-06-15
Abstract
No abstract record available.
Inventors
- 👤 Madsen Royal Glen
- 👤 Michael E Stickney
- 👤 Roland C Hawes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:27
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/04; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T74/00; Y10T74/13; Y10T74/131; Y10T74/19; Y10T74/19014
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1943898A
Cited
US1964365A
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US2423440A
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US2428180A
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US2436235A
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US2502215A
Cited
US2462213A
Cited
US2475245A
Cited
US2537770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |