Title:
Speaking dictionary
United States Patent 2650097
US Patent References:
/1231061.html
- - 1231061
Educational appliance
- - 1630939
Mechanism for selectively reproducing characters and sounds
- - 1655510
Teaching attachment for phonographs
- - 1784489
Sound recording and reproducing apparatus
- - 2168792
/1231061.html
- - 1231061
Educational appliance
- - 1630939
Mechanism for selectively reproducing characters and sounds
- - 1655510
Teaching attachment for phonographs
- - 1784489
Sound recording and reproducing apparatus
- - 2168792
Inventors:
Erdos, Leslie L.
Publication Date:
08/25/1953
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Export Citation:
Assignee:
Erdos, Leslie L.
Primary Class:
Other Classes:
369/259, 222/451, 222/450, 369/93, 40/471, 369/63, 434/308
International Classes:
G09B5/06; G09B5/00
US Patent References:
| 2181112 | Sound reproducing apparatus for endless band sound carriers | |||
| 2237738 | Sound translating equipment | |||
| 2323066 | Apparatus for the picking up and reproduction of sounds | |||
| 2369572 | Book | |||
| 2412061 | Combined phonograph and word display apparatus for teaching languages | |||
| 2417651 | Sound recording and reproducing machine | |||
| 2491944 | Combination sound and visual reproduction apparatus | |||
| 2535480 | Magnetic recording and reproducing |
Foreign References:
| GB314938A |