Douglas W. Rowell

Follow

Person

Woodbury, CT, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for manufacturing heat exchanger tubes
- Patent number 4,506,135
- Issue date Mar 19, 1985
- kabelmetal electro Gesellschaft mit beschrankter Haftung
- Gerhard Ziemek
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method and apparatus for rolling metal wire or rod into wide, flat...
- Patent number 4,233,832
- Issue date Nov 18, 1980
- Douglas W. Rowell
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Apparatus for extrusion of tubes
- Patent number 4,104,903
- Issue date Aug 8, 1978
- Kabel-und Metallwerke Gutehoffnungshuette AG
- Douglas W. Rowell
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...