Letitia Mumford Geer

  Life: Letitia Mumford Geer born in 1852 in New York and died on 18 july of 1935,died at the age of 83 years old.She studied medicine.She
didn't marry.

Family: Father: George Warren Geer (1843-1917)

Mother: Cornelia Matilda Geer (1851-1921)

Brothers:4 Gurdon Saltonstall Mumford Geer,John Mumford Geer,

Sisters: No

Invention:One-hand operated syringe,is the name of the invention of Letitia Geer.

A person can use it without the aid of an assistant.

And of course you can use it of only one hand,because

before a person need to use the “normal syringe” with

2 hands.This invention is very important in the medicine.

CITATIONS

https://en.wikipedia.org/wiki/Letitia_Mumford_Geer

https://steemit.com/cervantes/@tanita249/mujeres-que-cambiaron-el-mundo-cap-01-letitia-mumford-geer

https://patents.google.com/patent/US622848A/en

VIDEO

https://youtu.be/-dp_AtA4tjE