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Construction
Class Information
Number:
14/46
Name:
Bridges
>
Draw
> Locking devices
Description:
Devices for positively locking drawbridges against movement.
Patents under this class:
Patent Number
Title Of Patent
Date Issued
6701562
Span lock with centering guide
Mar. 9, 2004
6588041
Pre-load adjustment for span lock system
Jul. 8, 2003
5327605
Energy-absorbing span lock system for drawbridges
Jul. 12, 1994
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