US3235055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard for generating braille copy
Assignee: AT&T Teletype Corp
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Filing: 1964-04-30
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Granted: 1966-02-15
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Expires: 1984-04-30
Abstract
No abstract record available.
Inventors
- 👤 Walter H Pagenkopf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:52
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/32; B41J5/00; B41J5/08; B41J5/10; B41J5/107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A KEYBOARD FOR GENERATING BRAILLE COPY, A KEY HAVING A KEYTOP BEARING ON A PORTION OF ITS SURFACE A GROUP OF LETTERS WHICH FORM A CONTRACTION IN THE BRIALLE LANGUAGE AND BEARING ON ANOTHER PORTION OF ITS SURFACE A WORD, THE CONTRACTION AND THE WORD BEGINNING WITH THE SAME LETTER, AT LEAST ONE OTHER KEY HAVING A KEYTOP BEARING ON A PORTION OF ITS SURFACE A SECOND CONTRACTION IN THE BRAILLE LANGUAGE WHICH BEGINS WITH THE SAME LETTER AS THE FIRST CONTRACTION AND BEARING ON ANOTHER PORTION OF SECOND WORD, THE SECOND WORD NOT BEGINNING WITH THE SAME LETTER AS THE FIRST WORD, AND A THIRD KEY HAVING A KEYTOP BEARING ON AT LEAST A PORTION OF ITS SURFACE A THIRD CONTRACTION OF THE BRAILLE LANGUAGE WHICH BEGINS WITH THE SAME LETTER AS THE FIRST LETTER OF THE SECOND WORD.
Claim 2
Dependent Claim
141 words
IN A KEYBOARD FOR GENERATING BRAILLE COPY, A KEY HAVING A KEYTOP BEARING ON A PORTION OF ITS SURFACE A GROUP OF LETTERS WHICH FORM A CONTRACTION IN THE BRIALLE LANGUAGE AND BEARING ON ANOTHER PORTION OF ITS SURFACE A WORD, THE CONTRACTION AND THE WORD BEGINNING WITH THE SAME LETTER, AT LEAST ONE OTHER KEY HAVING A KEYTOP BEARING ON A PORTION OF ITS SURFACE A SECOND CONTRACTION IN THE BRAILLE LANGUAGE WHICH BEGINS WITH THE SAME LETTER AS THE FIRST CONTRACTION AND BEARING ON ANOTHER PORTION OF SECOND WORD, THE SECOND WORD NOT BEGINNING WITH THE SAME LETTER AS THE FIRST WORD, AND A THIRD KEY HAVING A KEYTOP BEARING ON AT LEAST A PORTION OF ITS SURFACE A THIRD CONTRACTION OF THE BRAILLE LANGUAGE WHICH BEGINS WITH THE SAME LETTER AS THE FIRST LETTER OF THE SECOND WORD.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |