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US2739649A
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US
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Auxiliary keyboard and operating mechanism for typesetting, typecasting, message transmission, tape perforating, and similar machines
Assignee: UNITYPO Inc
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Filing: 1954-03-25
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Granted: 1956-03-27
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Expires: 1974-03-25
Abstract
No abstract record available.
Inventors
- 👤 Herman E Happel
- 👤 Marion J Arvin
- 👤 Francis J Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:54
CPC Classifications
B; B41; B41B; B41B27/00; B41B27/02; B41B27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2679902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |