Toy hectograph
United States Patent 2927531
US Patent References:
/0192299.html
- - 0192299
/1055932.html
- - 1055932
/1070176.html
- - 1070176
Marking device
- - 2046639
/2600990.html
- - 2600990
/0192299.html
- - 0192299
/1055932.html
- - 1055932
/1070176.html
- - 1070176
Marking device
- - 2046639
/2600990.html
- - 2600990
Inventors:
Hirsch, Benjamin L.
Henry, Hirsch
Henry, Hirsch
Publication Date:
03/08/1960
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Export Citation:
Assignee:
Hirsch, Benjamin L.
Henry, Hirsch
Henry, Hirsch
Primary Class:
Other Classes:
101/297
International Classes:
A63H33/30; B41L9/00
US Patent References:
| 2859690 | Master card feeding means in printing machines |
Foreign References:
| GB188707262A | ||||
| FR401423A |