That is literally dozens of inventors.
The screws were invented first in the late 1700s and the handheld screwdriver first appeared after 1800.
The Phillips screwdriver was invented in Portland, Oregon in the eary 1930's by Henry F.Phillips.
None. The screw hadn't been invented and so the screwdriver wasn't invented.
the screwdriver in 1907 :)
It is a screwdriver with a 6 pointed bit invented and much used in the auto industry.
Examples are: hammer, mallet, screwdriver, allen key, and spanner.
a screwdriver opening a the lid of a paint can
Screwdriver and hammer are examples of contruction technology
A screwdriver.
Screwdriver and hammer are examples of contruction technology
Albert Kohler of Prince George, British Columbia claims to have invented it
The ratchet screwdriver does not have one clearly agreed inventor, because several early ratcheting screwdriver patents appeared in the 1800s. One of the earliest listed patents was by G. H. Talbot in 1858 for a ratchet movement for screwdrivers. Later, German toolmaker Conrad Baumann became known for the Baumann Weltrecord ratchet screwdriver, an early and famous ratcheting design. EnrgTech offers ratchet screwdrivers for faster screwdriving, repair, and maintenance tasks.