The U.S. Patents and Trademarks Office issued utility patent number 6,511,741 to Ronald C. Hungarter for a roofing layout tape.
On January 28, 2003, the U.S. Patents and Trademarks Office issued utility patent number 6,511,741 to Ronald C. Hungarter, President of THOR® Systems Inc., Larksville, Pa., for his work involving the creation of a roofing layout tape designed to revolutionize the steep-slope roofing industry. Spin-offs of this asphalt shingle roofing layout tape concept, providing both horizontal and vertical shingle alignments are currently being developed, with new tapes already designed for the metal roofing industry.
U.S. Patents Office Issues Roofing Layout Tape Utility Patent
February 27, 2003