On April 28, 1992, U.S. Patent No. 5,107,620 issued to Richard E. Mahan on an Electrified Table Cloth. The table cloth had a mini electric fence to keep crawling insects from joining the picnic.
HDP Patents Blog
On April 28, 1992, U.S. Patent No. 5,107,620 issued to Richard E. Mahan on an Electrified Table Cloth. The table cloth had a mini electric fence to keep crawling insects from joining the picnic.