Title:
Magnetic toy building blocks
United States Patent 2872754
US Patent References:
/0242821.html
- - 0242821
/1236234.html
- - 1236234
Magnetic block
- - 2448692
Holder for hairpins
- - 2495644
Magnetically coupled toy train
- - 2607157
/0242821.html
- - 0242821
/1236234.html
- - 1236234
Magnetic block
- - 2448692
Holder for hairpins
- - 2495644
Magnetically coupled toy train
- - 2607157
Inventors:
Carl, Cronberger Luther
Publication Date:
02/10/1959
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Export Citation:
Assignee:
Carl, Cronberger Luther
Primary Class:
Other Classes:
52/DIG.010
International Classes:
A63H33/04