logo

For the Inventor, By the Inventor

Overland Park, KS, United States of America

Havaco Incorporated


USPTO Granted Patents = 2

Trademarks = 1

Forward Citations = 7

Loading Chart...
Loading Chart...

1 inventor (with patents filed for the assignee):

goldMedal Robert L Stevenson (2 out of 15 patents)


2 patents:

1. 4286500 - Rotary control valve for expansion fluid driven engines (1981-09-01),
2. 4183285 - Rotary control valve for expansion fluid engines (1980-01-15),
logo

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#99 in Overland Park, KS

#961 in Kansas

#94,730 in US

Overland Park, KS (US)
Overland Park, KS, United States of America

Havaco Incorporated

Forward Citations = 7

1 inventor:

goldMedal Robert L Stevenson (2 out of 15 patents)

Please report any incorrect information to [email protected]
Loading…