E. Hawle & Co.

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Patents Grantslast 30 patents

Information Patent Grant
A method of making a clamping ring for use in a pipe joint
- Patent number 4,706,529
- Issue date Nov 17, 1987
- E. Hawle & Co.
- Erwin Hawle
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Clamping ring for use in a pipe joint
- Patent number 4,657,288
- Issue date Apr 14, 1987
- E. Hawle & Co.
- Erwin Hawle
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR