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STEVENS FREDERICK A

Overview
  • Total Patents
    28
About

STEVENS FREDERICK A has a total of 28 patent applications. Its first patent ever was published in 1899. It filed its patents most often in United States and Canada. Its main competitors in its focus markets optics, machines and packaging and shipping are NANNINI GIORGIO SRL, CELES OPTICAL and LEONARDO MECCANOPTICA.

Patent filings in countries

World map showing STEVENS FREDERICK As patent filings in countries
# Country Total Patents
#1 United States 26
#2 Canada 2

Patent filings per year

Chart showing STEVENS FREDERICK As patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Stevens Frederick A 28
#2 Brady John F 1
#3 Bouchard Samuel E 1

Latest patents

Publication Filing date Title
US2457938A Ophthalmic mounting with concealed lens-carrying and noseguard-carrying arms
US2458963A Detachable bridge-brace-bar spectacle construction
US2192208A Ophthalmic mounting
US2036553A Tool for securing small metal screws in threaded position
US2036550A Ophthalmic mounting and parts thereof
US2016059A Tag
US1497955A Bookmark
US1267472A Lens-post sleeve and method of forming the same.
US1263716A Lacing-tip.
US1250377A Method of forming saws.
US1245630A Abutment for ring-trays.
US1210870A Tray.
US1097063A Blank for eyeglass and spectacle bridges.
US1035916A Nose-guard for eyeglasses.
US1056850A Welding-machine.
US1038675A Spectacles.
US956220A Eyeglass-mounting.
US953304A Frameless spectacles.
US989077A Eyeglass-mounting.
US901659A Method of making bifocal lenses.