Franz X. Wohrstein

Person

Park Ridge, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Solderless metallurgical joint
- Patent number 5,549,335
- Issue date Aug 27, 1996
- Peerless of America, Incorporated
- Franz X. Wohrstein
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of manufacturing a heat exchanger assembly with wrapped tubing
- Patent number 5,228,198
- Issue date Jul 20, 1993
- Peerless of America, Incorporated
- Roger Paulman
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method and apparatus for separating thin-walled, multiport micro-ex...
- Patent number 5,133,492
- Issue date Jul 28, 1992
- Peerless of America, Incorporated
- Franz X. Wohrstein
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of making a heat exchanger assembly with wrapped tubing
- Patent number 5,099,574
- Issue date Mar 31, 1992
- Peerless of America, Incorporated
- Roger Paulman
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Heat exchanger assembly with integral fin unit
- Patent number 4,881,311
- Issue date Nov 21, 1989
- Peerless of America Incorporated
- Roger Paulman
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Finned heat exchanger tubing with varying wall thickness
- Patent number 4,794,985
- Issue date Jan 3, 1989
- Peerless of America Incorporated
- Roger Paulman
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Heat exchanger assembly with integral fin unit
- Patent number 4,778,004
- Issue date Oct 18, 1988
- Peerless of America Incorporated
- Roger Paulman
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Process of making heat exchangers
- Patent number 4,637,111
- Issue date Jan 20, 1987
- Peerless of America, Inc.
- Stephen F. Pasternak
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Heat exchangers and method of making same
- Patent number 4,554,970
- Issue date Nov 26, 1985
- Peerless of America, Inc.
- Stephen F. Pasternak
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Franz X. Wohrstein

Person

Patents Grantslast 30 patents

Solderless metallurgical joint

Method of manufacturing a heat exchanger assembly with wrapped tubing

Method and apparatus for separating thin-walled, multiport micro-ex...

Method of making a heat exchanger assembly with wrapped tubing

Heat exchanger assembly with integral fin unit

Finned heat exchanger tubing with varying wall thickness

Heat exchanger assembly with integral fin unit

Process of making heat exchangers

Heat exchangers and method of making same