Title:
Scientific puzzle
United States Patent 2900190
US Patent References:
/0231963.html
- - 0231963

/1264944.html
- - 1264944

/1290761.html
- - 1290761


Inventors:
Jules, Pestieau
Publication Date:
08/18/1959
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Assignee:
Jules, Pestieau
Primary Class:
273/157R
Other Classes:
273/236
International Classes:
A63F9/10; A63F9/06
Foreign References:
GB191314481A
GB403691A