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Number:
285/424
Name:
Pipe joints or couplings
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Materials
> Sheet
Description:
Subject matter which includes material originally in sheet form.
Patents under this class:
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Patent Number
Title Of Patent
Date Issued
3998480
Take-off fitting for low pressure non-metallic duct systems
Dec. 21, 1976
3993334
Pipe jointing piece with O-rings
Nov. 23, 1976
3988030
Slip-joint coupling, method of installing same and frame subassembly for use therewith
Oct. 26, 1976
3964772
Connector for flexible metallic conduit and method
Jun. 22, 1976
3954289
Plenum starter piece
May. 4, 1976
3934905
Expansion joint
Jan. 27, 1976
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