Patent of the Day: Fire Hydrant

On this day in 1929, the patent application for Fire Hydrant was granted. U.S. Patent No. 1,717,392.


Patent of the Day: Sound Reproducing Machine

On this day in 1930, the patent application for Sound Reproducing Machine was granted. U.S. Patent No. 1,764,120.


Patent of the Day: Pipe-Cleaner

On this day in 1903, the patent application for Pipe-Cleaner was granted. U.S. Patent No. 731,190.


Patent of the Day: Mouse Trap

On this day in 1943, the patent application for Mouse Trap was granted. U.S. Patent No. 2,321,617.


Patent of the Day: Lung Protector

On this day in 1849, the patent application for Lung Protector was granted. U.S. Patent No. 6,529    


Patent of the Day: Hair Spray Shield

On this day in 1964, the patent application for Hair Spray Shield was filed. U.S. Patent No. 3,317,921


Patent of the Day: Dog Whistle

On this day in 1941, the patent application for Dog Whistle was granted. U.S. Patent No. 2,245,484    


Patent of the Day: Pretzel Making Machine

On this day in 1915, the patent application for Pretzel Making Machine was granted.  U.S. Patent No. 1,142,533


Patent of the Day: License Plate Holder

On this day in 1928, the patent application for License Plate Holder was granted.  U.S. Patent No. 1,672,333.    


Patent of the Day: Vending Machine

On this day in 1925, the patent application for Vending Machine was filed.  U.S. Patent No. 1,689,039.


Patent of the Day: Baby Incubator and the Like

On this day in 1941, the patent application for Baby Incubator and the Like was granted.  U.S. Patent No. 2,243,999.  


Patent of the Day: Apparatus for Gathering Cranberries

On this day in 1885, the patent application for Apparatus for Gathering Cranberries was granted.  U.S. Patent No. 319,352.