Patent of the Day: Hydrocarbon Furnace
On this day in 1905 George L. Bourne was granted the patent for Hydrocarbon Furnace. U.S. Patent No. 793,622. This invention relates to novel improvements in furnaces of the class in which crude…
Patent of the Day: Machine for Printing and Embossing Checks
On this day in 1902 Frank H. Cottrill was granted the patent application for Machine for Printing and Embossing Checks. U.S. Patent No. 703,335. This invention has for its object to provide a machine…
Patent of the Day: Ice Rink Resurfacing Machine (Zamboni)
On this day in 1953, F.J. Zamboni was granted the patent for Ice Rink Resurfacing Machine. U.S. Patent No. 2,642,679.
Patent of the Day: Refrigerator
On this day in 1909 Alvin V. Rowe was granted the patent for Refrigerator. U.S. Patent No. 925,727.
Patent of the Day: Hydraulic Air Compressor
On this day in 1904 John Homer Alexander was granted the patent for Hydraulic Air Compressor. U.S. Patent No. 763.239. The object of this invention is to provide an improved apparatus for compressing…
Patent of the Day: Grave Alarm
On this day in 1893 August Lindquist was granted the patent for Grave Alarm. U.S. Patent No. 500,072. This invention relates to improvements in grave alarms, whereby persons who are prematurely…
Patent of the Day: Bi-Telephone
On this day in 1891 Ernest Jules Pierre was granted the patent for Bi-Telephone. U.S. Patent No. 454,138. This invention relates to an improvement in telephone-receivers, and has for its objects,…
Patent of the Day: Mouse Trap
On this day in 1943 Henry Peterson was granted the patent for Mouse Trap. U.S. Patent No. 2,321,617. The object of this invention is to provide a mouse trap made of metal, for sanitary reasons, and…
Patent of the Day: Combination Shoulder and Lap Safety Belt (seat belt)
On this day in 1955 Roger W. Griswold II et al, were granted the patent for Combination Shoulder and Lap Safety Belts. U.S. Patent No. 2,710,649. This invention relates to combined shoulder and lap…
Patent of the Day: Circuit Breaker and Closer for Alternating Currents
On this day in 1905 Andrew Gray was granted the patent for Circuit Breaker and Closers for Alternating Currents. U.S. Patent No. 792,020. This inventions relates to circuit-closers for heaving…
Patent of the Day: Method of Gravity Liquid Separation of Solids
On this day in 1913 Francis I. DuPont was granted the patent for Method of Gravity Liquid Separation of Solids. U.S. Patent No. 1,064,459. In this improved method a liquid other than water which is…
Patent of the Day: Job-Printing Press
On this day in 1903 Frank W. Pohl was granted the patent for Job-Printing Press. U.S. Patent No. 730,396. This invention relates to job-printing presses, and its object is to produce a job-press…