US Patent 7663498 Lockable signalling column
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Patent abstract
The invention relates to a signaling column with levels which are assembled by a relative pivoting limited in amplitude and interconnected by axially-extending conductors. The body of a level includes a locking bar which extends axially to penetrate an opening in an adjacent level and abuts an edge of the opening on a rotation attempt. The ends of the bar may be displaced and the opening is of such a size as to accommodate the top end of a relevant bar and the bottom end of the bar above.
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US Patent 07663498 Lockable signalling column US Patent 7663498 Lockable signalling column
Infobox
Patent Number
0766349800
Patent Number
766349800
Edits on 21 May, 2023
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Official Website
Edits on 28 Mar, 2023
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Infobox
Is a
Patent Jurisdiction
Patent Number
076634980
Date of Patent
February 16, 2010
0Patent Application Number
115794110
Date Filed
April 21, 2005
0Official Website
Patent Primary Examiner
Edits on 24 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
076634980
Date of Patent
February 16, 2010
0Patent Application Number
115794110
Date Filed
April 21, 2005
0Official Website
Patent Primary Examiner
Edits on 18 Jun, 2022
Golden AI
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Edits on 3 Dec, 2021
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US Patent 07663498 Lockable signalling column
Infobox
Is a
Patent jurisdiction
Patent number
07663498
Date of patent
February 16, 2010
Patent application number
11579411
Date Filed
April 21, 2005
Patent primary examiner
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