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http://www.google.com/patents/US3235262?utm_source=gb-gplus-share
Patent US3235262 - ENDLESS BAND PUZZLE
ENDLESS BAND PUZZLE
Winitoop- Atkins Co.
› Overview
Abstract
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Description
Claims
Patent number
: 3235262
Issue date
: Feb 15, 1966
Inventor
:
Winitoop- Atkins Co.
Original Assignee
:
Winitoop
Current U.S. Classification
:
273/155
;
434/426
;
446/147
View patent at USPTO
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