P. L. ROBERTSON MANUFACTURING COMPANY LIMITED Trademarks
PAN AMERICAN SCREW
Filed: October 9, 1958
SCREWS
Owned by: P. L. ROBERTSON MANUFACTURING COMPANY LIMITED
Serial Number: 72060361
SCRULOX
Filed: January 5, 1960
Square Recess Screws
Owned by: P. L. ROBERTSON MANUFACTURING COMPANY LIMITED
Serial Number: 72088487
SCRULOX
Filed: April 29, 1960
Screwdrivers
Owned by: P. L. ROBERTSON MANUFACTURING COMPANY LIMITED
Serial Number: 72096136
