Grove v. Grove Valve & Regulator Co.

Opinion

DAVID, J. pro tem. *

This is a suit brought by appellant Marvin H. Grove for injunctive relief and accounting against respondents Grove Valve and Regulator Company and Walworth Company, for use of 12 improvement inventions patented to and allegedly made by him, in the manufacture and sale of the so-called G-5 gate valve, and Valv-Pak completion valve assembly. Respondent companies cross-complained, asserting their ownership of the 12 patents, and 6 more inventions patented to Mr. Grove, by reason of their contract or contracts with appellant Grove; and sought mandatory injunctive relief…