| Class Number |
Class Name |
Patents |
| 400/1 |
Including justification or quadding of print-line |
1 |
| 400/100 |
Plural-key-actuated typewriter (e.g., permutative key-board) |
42 |
| 400/103 |
Code-printing typewriter (e.g., for printing a pattern or mark) |
116 |
| 400/109 |
Foreign language or braille typewriter |
51 |
| 400/112 |
Annular typewriter (e.g., for typing around circumference of platen) |
5 |
| 400/116 |
Music-roll or musical-notation typewriter |
3 |
| 400/118.1 |
Typing by heated die |
12 |
| 400/118.2 |
Typing by other than type-face or type-die |
37 |
| 400/127 |
Typing to produce embossed character |
38 |
| 400/135 |
Typing to produce pierced character |
6 |
| 400/139 |
Including type-set-assemblage mounted on carrier and relatively movable for selection and for impact of type-face |
17 |
| 400/16 |
For typing or forming continuous or discontinuous line (e.g., by "liner") |
4 |
| 400/176 |
Having fluid-pressure power drive |
10 |
| 400/184 |
Having typewriter-controlled reciprocable electromagnetic drive for plural functions in same typewriter |
10 |
| 400/185 |
Having power-driven operator for plural functions |
144 |
| 400/188 |
For typing on reverse surface of record-medium |
93 |
| 400/191 |
Including interposed inking device (e.g., ribbon) for record-medium |
15 |
| 400/23 |
For typing on flat record-medium or against flat platen |
40 |
| 400/251 |
Case-shift mechanism |
1 |
| 400/279 |
Control of print position along print-line by signal generated by programmed-control-system |
335 |
| 400/283 |
Carriage or carriage-moving or movement-regulating mechanism |
73 |
| 400/359 |
Having typewriter-controlled reciprocable electromagnetic drive for type bar actuation in same typewriter |
1 |
| 400/365 |
Having rotated power drive intermittently applied for type-bar actuation |
1 |
| 400/383 |
Type-bar-action mechanism or type-face on type-bar or type-face inker |
0 |
| 400/472 |
Key-board or key lever-actuating mechanism |
379 |
| 400/497 |
With control of "carbon paper" for typing plural simultaneous copies by single impression (e.g., on "manifold set") |
1 |
| 400/50 |
Including delay means for preventing malfunction in powered typewriter |
10 |
| 400/521 |
For typing on card in card holder |
29 |
| 400/53 |
Including adjustment means to compensate for wear |
19 |
| 400/54 |
Safety switch or condition-responsive-cutoff switch for electrically powered typewriter |
123 |
| 400/545 |
For line-spacing by incremental rotation of platen |
10 |
| 400/55 |
Including adjustment for optimum printing plane |
156 |
| 400/578 |
Sheet or web (e.g., record-medium feeding mechanism) |
149 |
| 400/61 |
Including control of format and selection of type-face by programmed control-system (e.g., input typewriter) |
508 |
| 400/648 |
Platen or platen-moving mechanism |
62 |
| 400/663 |
Locking or interlocking mechanism |
41 |
| 400/679 |
Means auxiliary to typewriting function |
39 |
| 400/70 |
Including selection of type-face by programmed-control-system or by remote control |
402 |
| 400/719 |
Miscellaneous |
93 |
| 400/76 |
Including control of format by programmed-control-system |
647 |
| 400/77 |
Typewriter controls other information recorder |
22 |
| 400/82 |
Including plural, independently supported key-boards, platens, or type-set assemblages |
191 |
| 400/83 |
Displaying typewriter-formed representation of print-line |
205 |
| 400/86 |
Operating by sound |
13 |
| 400/87 |
For operation by handicapped user |
26 |
| 400/88 |
Pocket typewriter |
319 |
| 400/89 |
Key reassignment |
4 |
| 400/900 |
Chemical-symbol character |
3 |
| 400/901 |
Continuously rotating type-head |
3 |
| 400/902 |
Stepping-motor drive for web feed |
51 |
| 400/903 |
Stepping-motor drive for carriage feed |
73 |
| 400/904 |
Subscript or superscript character |
20 |
| 400/91 |
Stenographic typewriter |
23 |
| 400/95 |
Logotype typewriter (e.g., word typing) |
7 |
