Patent of the Day: Method of Preparing Food Products (Birdseye)
On this day in 1930 the patent application for Method of Preparing Food Products was granted. U.S. Patent No. 1,773,079.
Patent of the Day: Secret Communication System
On this day in 1942 the patent application for Secret Communication System was granted. U.S. Patent No. 2,292,387.
Patent of the Day: Electrical Stringed Musical Instrument (Electric Guitar)
On this day in 1937 the patent application for Electrical Stringed Musical Instrument was granted. U.S. Patent No. 2,089,171.
Patent of the Day: Skirt Protector
On this day in 1883 the patent application for Skirt Protector was granted. U.S. Patent No. 282,646.
Patent of the Day: Cathode Ray Tube
On this day in 1935 the patent application for Cathode Ray Tube was granted. U.S. Patent No. 2,010,712.
Patent of the Day: Hair Singer
On this day in 1890 the patent application for Hair Singer was granted. U.S. Patent No. 433,439.