US

On September 27, 1910, Ava I. Chandler of Marion, Ohio, patented an adjustable holder for electric-light globes. Made of spring-wire rings joined by converging braces, her design securely gripped both socket and shade without screws and fit fixtures of various sizes.

On July 11, 1944, Ava Jane E. Key of Hempstead, New York, obtained a patent for a novel garment waistband. Featuring firm front panels and wide, fan-shaped elastic sections at the back, her design kept garments securely fitted while allowing free movement.

On January 30, 1945, Ava L. Johnson of Oakland, California, an assignor to Shell Development Company, patented an improved process for separating acidic gases from water-insoluble fluids. Her method used a high-pressure water wash followed by efficient alkaline scrubbing and steam regeneration, greatly boosting purification and reducing energy costs.

On June 7, 1949, Ava J. Johnson of Oakland, California, an assignor to Shell Development Company, patented a novel method for carrying out endothermic catalytic reactions. Her process balanced endothermic and exothermic steps inside a multi-zone reactor, extending catalyst life and boosting yields.

On April 14, 1942, Ava M. Beard of Butler, Missouri, patented a power take-off drive for cylindrical ground pulverizers. Her design provided a positive, tractor-driven mechanism with adjustable height control, giving simpler construction, sturdier operation, and precise regulation of soil-cutting depth.

On June 27, 1911, Ava R. Coleman of Palmyra, Virginia, patented a magnetic tilting-board game. Using irregularly rolling balls and a hidden, pivoting magnet that disrupted their paths, her design added mystery, challenge, and surprise to simple chance-and-skill play.

On April 1, 1938, Beatrice G. Bryant, a resident of Oklahoma City, was awarded a patent for developing a novel vanity case designed to prevent loose powder from sifting out while still making it accessible to the puff.

On August 15, 1950, Bernice Hulbert of Chicago, Illinois, was granted a patent for an innovative toy ball. This unique design featured a figure mounted inside the ball, engineered to roll and consistently come to an upright position, delighting children with its playful motion.

On March 12, 1918, Bessie Roberta Callow of Salt Lake City, Utah, patented a coin envelope featuring a row of pockets, each designed to hold a token securely in place. Her invention improved the stability and organization of coins during mailing or other forms of transport.

On May 27, 1913, Beulah Louise Henry of Charlotte, North Carolina, received a patent for an improved bag with a covering that could be easily changed to match clothing of different colors.