Patent US2320337A successfully refreshed from Google Patents.
US2320337A
Expired / Lapsed
US
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Cathode tube recorder for calculating machines
Assignee: International Business Machines Corp
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Filing: 1939-06-30
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Granted: 1943-06-01
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Expires: 1959-06-30
Abstract
No abstract record available.
Inventors
- 👤 James W Bryce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:43
CPC Classifications
G; G09; G09G; G09G1/00; G09G1/20; F; F16; F16L; F16L17/00; F16L17/02; F16L17/03; F16L17/032; F16L37/00; F16L37/50; F16L37/54; G09G1/06; G09G1/08; G09G1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-05-31 | 1946-11-30 | 1947-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-05-31 | 1950-11-30 | 1951-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-05-31 | 1954-11-30 | 1955-06-01 | $7700.00 | Window Closed / Lapsed |