Title:
Method of making intermediate shell construction for silencer or muffler
United States Patent 3242558
US Patent References:
/0567328.html
- - 0567328

/0743193.html
- - 0743193

/1057098.html
- - 1057098

Rolling mill for forming pipe couplings
- - 1602550

Muffler
- - 1878424


Inventors:
Selig, James H.
Publication Date:
03/29/1966
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Assignee:
OLDBERG MFG COMPANY
Primary Class:
29/890.080
Other Classes:
29/520, 29/455.100, 138/148, 181/266, 29/523
International Classes:
F01N7/18
US Patent References:
2047442Muffler
2147015Silencer
2157252Rolling-in machine
2264524Method of making mufflers
2401606Method of manufacturing tanks
2485969Method of making brake drums
2680901Method of assembling jacketed conduit systems
2683928Method of corrugating tubing
2950777Silencer or muffler
2958389Silencer or muffler
3092896Method of making waveguide
3104735Sound attenuating gas pipe
3204164Encased electrical capacitor
Foreign References:
DE1090473B
GB422004A