US

On March 27, 1923, Mabel Frederick, of Pueblo, Colorado, was awarded a patent for developing a projector that could permit an image to be projected in a stable position for a considerable amount of time and automatically move to the next animation without the aid of an operator.

On July 5, 1932, Mabel White of Spokane, WA, was awarded a patent for her development of a novel and easily adjustable device designed to cut vegetables into cubes of different sizes.

On January 23, 1940, Mabel Winkel of New York was awarded a patent for designing a novel shoe made with an elastic-like leather upper sole that allowed for easy insertion of the foot.

On November 27, 1900, Mae Birney of New Whatcom, WA, received a patent for a novel jar closure featuring an improved flange lock designed to prevent liquids from leaking out.

On March 30, 1909, Mamie Trimble, a resident of Columbus, Kansas, was awarded a patent for developing a novel book holder designed to expedite reading by keeping books open. Date of Application: 4 August 1908

On February 15, 1927, Martha Banach of New York received a patent for a novel hair waver. The device features two adjacent corrugated plates sized to match the desired width of the hair wave.

On November 14, 1865, Martha P. Codman, then residing in Boston, was awarded a patent for designing a novel drinking vessel. Her invention was intended to enable a sick person lying horizontally to drink comfortably without needing to change position.

On July 8, 1941, Martha Thal of Chicago received a patent for developing a novel method for producing industrial pies. Her process aimed to preserve the aromas of home-baked pies by quickly freezing the unbaked product.

On February 25, 1873, Mary A. Curtis, a resident of San Francisco, was awarded a patent for developing a novel ointment developed to alleviate inflammatory symptoms and rheumatism. Date of Application: -

On May 22, 1906, Sara E. Wiltse, living in Boston, was awarded a patent for developing a novel apparatus consisting of stairs to enable small children to exercise. Date of Application: 20 November 1905