W. M. WELCH MANUFACTURING COMPANY Trademarks
DENSICHRON
Filed: February 5, 1949
PHOTOSENSITIVE LIGHT MEASURING OR INDICATING INSTRUMENTS
Owned by: W. M. WELCH MANUFACTURING COMPANY
Serial Number: 71573390
MAGNEPHOT
Filed: February 5, 1949
PHOTOSENSITIVE LIGHT MEASURING OR INDICATING INSTRUMENTS
Owned by: W. M. WELCH MANUFACTURING COMPANY
Serial Number: 71573391
