EXHIBIT 10.4 CONFIDENTIAL TREATMENT HAS BEEN REQUESTED FOR PORTIONS OF THIS EXHIBIT. THE COPY FILED HEREWITH OMITS THE INFORMATION SUBJECT TO THE CONFIDENTIALITY REQUEST. OMISSIONS ARE DESIGNATED AS [*****]. A COMPLETE VERSION OF THIS EXHIBIT HAS BEEN...Development, Marketing and Distribution Agreement • September 28th, 2000 • Proton Energy Systems Inc • Electrical industrial apparatus • Connecticut
