Patent US2679902A successfully refreshed from Google Patents.
US2679902A
Expired / Lapsed
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: 1953-04-07
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Granted: 1954-06-01
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Expires: 1973-04-07
Abstract
No abstract record available.
Inventors
- 👤 Claire N Brewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:11
CPC Classifications
B; B41; B41B; B41B27/00; B41B27/02; B41B27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US467875A
Cited
US540949A
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US2469754A
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US785406A
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US1271614A
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US1278089A
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US1753991A
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US2019864A
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US2107030A
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US2581665A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |