logo

For the Inventor, By the Inventor

St. Louis, MO, United States of America

Ehrhardt Tool and Machine Company, Inc.


USPTO Granted Patents = 2

Forward Citations = 14

Loading Chart...
Loading Chart...

2 inventors (with patents filed for the assignee):

goldMedal Russell W Hoeffken (1 out of 23 patents)

silverMedal Joseph Poletti (1 out of 1 patent)


2 patents:

1. 5195580 - Heat exchanger seam and method of making same (1993-03-23),
2. 5119706 - Machine process for chamfering of precision pieces having non-linear (1992-06-09),
logo

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

2 Patents

#476 in St. Louis, MO

#1,292 in Missouri

#92,695 in US

...
St. Louis, MO, United States of America

Ehrhardt Tool and Machine Company, Inc.

Forward Citations = 14

2 inventors:

goldMedal Russell W Hoeffken (1 out of 23 patents)

silverMedal Joseph Poletti (1 out of 1 patent)

Please report any incorrect information to support@idiyas.com
Loading…