Inventor
WELCH SAMUEL JUSTIN
US6 patents
⚠️ This page may combine multiple inventors who share the name “WELCH SAMUEL JUSTIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WELCH TUNING SYSTEMS INC
4 patentsUS11081092B2Aug 3, 2021
Tensioning system for vibrating membranes
WELCH TUNING SYSTEMS INC1 citations57
USD889534SJul 7, 2020
Drum head tensioning bracket
WELCH TUNING SYSTEMS INC1 citations57
USD875171SFeb 11, 2020
Drum claw
WELCH TUNING SYSTEMS INC1 citations57
USD875172SFeb 11, 2020
Drum hoop bracket
WELCH TUNING SYSTEMS INC0 citations46