Static structures (e.g., buildings)
Controlled by condition responsive means
Inventor
active
Combination manhole closure assembly and separate support ring
Manhole closure assembly
Ring expander device
No associations
LandOfFree
Samuel A. Campagna, Jr. does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Samuel A. Campagna, Jr., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Samuel A. Campagna, Jr. will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-779177