US4963044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter keyboard
Assignee: Individual
•
Filing: 1989-09-22
•
Granted: 1990-10-16
•
Expires: 2009-09-22
Abstract
Abstract A keyboard layout which has the letters, the numbers 0 to 9, and the punctuation marks disposed within four horizontal rows. The letters are disposed on first and second contiguous rows in alphabetical order from left to right with respect to all other letters on each of said rows. The numbers 0 to 9 are disposed on a third row, and the punctuation marks are disposed on the fourth row.
Inventors
- 👤 Samuel R. Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:31
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/0202; G06F3/0219; B; B41; B41J; B41J5/00; B41J5/08; B41J5/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
In a keyboard layout having non-shift and shift modes, the improvement which consists of disposing (i) the letters, (ii) the numbers 0 to 9, and (iii) the punctuation marks within a total of four horizontal rows, the letters being disposed on first and second contiguous rows in alphabetical order from left to right with respect to all other letters on each of said rows, the numbers 0 to 9 being disposed on a third of said four rows, and the punctuation marks being disposed on a fourth of said four rows.
Claim 2
Dependent Claim
91 words
In a keyboard layout having non-shift and shift modes, the improvement which consists of disposing (i) the letters, (ii) the numbers 0 to 9, and (iii) the punctuation marks within a total of four horizontal rows, the letters being disposed on first and second contiguous rows in alphabetical order from left to right with respect to all other letters on each of said rows, the numbers 0 to 9 being disposed on a third of said four rows, and the punctuation marks being disposed on a fourth of said four rows.
Claim 3
Dependent Claim
44 words
A keyboard layout according to claim 1 in which miscellaneous printing symbols are distributed between (i) the row of said four rows carrying said numbers for activation in the shift mode and (ii) on the row of said four rows carrying said punctuation marks.
Claim 4
Dependent Claim
28 words
A keyboard layout according to claim 1 in which said first and second of said four rows are interposed between said third and fourth of said four rows.
Claim 5
Dependent Claim
38 words
A keyboard layout according to claim 3 in which the letters A through M are disposed on said first of said four rows and the letters N through Z are disposed on said second of said four rows.
References Cited (Backward Citations)
US761179A
Cited
GB1292367A
Cited
US4358278A
Cited
GB2110163A
Cited
US4615629A
Cited
US4753439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-15 | 1994-04-16 | 1994-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-15 | 1998-04-16 | 1998-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-15 | 2002-04-16 | 2002-10-16 | $7700.00 | Window Closed / Lapsed |