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Variable Speed Mechanism
Patent for a variable speed mechanism. Illustration included.
Date:
June 9, 1908
Creator:
Doebbeling, Almond J.
System:
The Portal to Texas History
Post-Card Stand.
Patent for a post card stand, which turns by a crank mechanism to show all the postcards on the rack.
Date:
June 8, 1909
Creator:
Bishop, Marvin E.
System:
The Portal to Texas History