Inventor
WOHRSTEIN FRANZ X
US9 patents
Patents
9 patentsUS5133492AJul 28, 1992
Method and apparatus for separating thin-walled, multiport micro-extrusions
PEERLESS OF AMERICA56 citations95
US5549335AAug 27, 1996
Solderless metallurgical joint
PEERLESS OF AMERICA57 citations94
US4794985AJan 3, 1989
Finned heat exchanger tubing with varying wall thickness
PEERLESS OF AMERICA29 citations91
US4778004AOct 18, 1988
Heat exchanger assembly with integral fin unit
PEERLESS OF AMERICA46 citations91
US4881311ANov 21, 1989
Heat exchanger assembly with integral fin unit
PEERLESS OF AMERICA21 citations81
US5228198AJul 20, 1993
Method of manufacturing a heat exchanger assembly with wrapped tubing
PEERLESS OF AMERICA19 citations72
US5099574AMar 31, 1992
Method of making a heat exchanger assembly with wrapped tubing
PEERLESS OF AMERICA8 citations72
US4637111AJan 20, 1987
Process of making heat exchangers
PEERLESS OF AMERICA15 citations72
US4554970ANov 26, 1985
Heat exchangers and method of making same
PEERLESS OF AMERICA5 citations61