Mark Doll

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Lincoln, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for making a dual threaded bolt roll forming die
- Patent number 10,350,670
- Issue date Jul 16, 2019
- Mark Doll
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of forming a die for roll forming a dual threaded bolt
- Patent number 10,315,244
- Issue date Jun 11, 2019
- Mark Doll
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method for making a die for roll forming a dual threaded bolt
- Patent number 10,232,427
- Issue date Mar 19, 2019
- Mark Doll
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method for forming a dual threaded die
- Patent number 9,950,380
- Issue date Apr 24, 2018
- Mark Doll
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method for making a die for roll forming a dual threaded bolt
- Patent number 9,757,792
- Issue date Sep 12, 2017
- Mark Doll
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Compound die for dual thread forming
- Patent number 9,643,237
- Issue date May 9, 2017
- Mark Doll
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR