Title:
Method for forming pipe fittings
United States Patent 2736949


Inventors:
Kraemer, William D.
Application Number:
US32336852A
Publication Date:
03/06/1956
Filing Date:
12/01/1952
Assignee:
Kraemer, William D.
Primary Class:
Other Classes:
285/132.1, 285/399
International Classes:
B21C37/29; B23B41/00; F16L41/00
View Patent Images:
US Patent References:
2567165Y quarter bend plumbing fitting1951-09-11
2511836N/A1950-06-20
2507859Method of making pipe fittings1950-05-16
2290965Manufacture of t's1942-07-28
2183271Pipe fitting and method of producing the same1939-12-12
1921584Mandrel1933-08-08
1582525Machine for spinning, trimming, or flanging thin metal tubes1926-04-27
1101043N/A1914-06-23
0997464N/A1911-07-11
0869340N/A1907-10-29
0788803N/A1905-05-02
0693177N/A1902-02-11
0603244N/A1898-05-03
0587337N/A1897-08-03
0547400N/A1895-10-01
0545477N/A1895-09-03
0485715N/A1892-11-08
Foreign References:
DE152336C
GB427633A1935-04-23
DE614493C1935-06-11