In
a span of 5 years from 1926 to 1931, Rolex and Hans Wilsdorf would
create and patent two major horology milestones, which would forever set
Rolex apart; the Rolex Oyster waterproof watch-case,
and the Rolex Perpetual Movement. In 1925, Rolex would also create and
register their famous trademark logo of the Rolex five-point logo crown.
The
Art-Deco era was a time of tremendous growth for Rolex, so much so,
there are many art-deco elements which remain today as part of their
current design language.
The
Rolex Oyster is perhaps the most revolutionary and profound development
in watch history. The following patent application was filed by Hans
Wilsdorf on behalf of Rolex in 1926: