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Construction
Class Information
Number:
14/57
Name:
Bridges
>
Draw
>
Gates
>
Bridge operated
>
Displacement
>
Horizontally swinging
> Locking
Description:
Devices, said gate having an attachment for locking it in one position.
Patents under this class:
Patent Number
Title Of Patent
Date Issued
D256691
Speakerphone
Sep. 2, 1980
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