Uncategorized
Inventor
Alarm clock timer
Spiral spring operating mechanism for high voltage switch
Throttling valve
No associations
LandOfFree
Benjamin L. Gelfand does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Benjamin L. Gelfand, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Benjamin L. Gelfand will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-P-82280