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LETSCH FREDERICK W

Overview
  • Total Patents
    28
About

LETSCH FREDERICK W has a total of 28 patent applications. Its first patent ever was published in 1912. It filed its patents most often in Canada and United States. Its main competitors in its focus markets textiles and paper are DRUITT PERCY WALTER, TYPOGRAPH GES M B H and MOCK NATE.

Patent filings in countries

World map showing LETSCH FREDERICK Ws patent filings in countries
# Country Total Patents
#1 Canada 15
#2 United States 13

Patent filings per year

Chart showing LETSCH FREDERICK Ws patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Textiles and paper

Focus technologies

Top inventors

# Name Total Patents
#1 Letsch Frederick W 28

Latest patents

Publication Filing date Title
US1510788A Casting and trimming mechanism for typographic machines
US1518858A Automatic matrix-clamping and mold-adjusting mechanism
US1462116A Assembling and transfer mechanism
US1513327A Galley mechanism for typographic machines
US1410330A Matrix holder and elevator for typographic machines
US1458659A Casting mechanism for typographic machines
US1441101A Distributing mechanism for typographic machines
CA194580A Typographic machine
CA194579A Typographic machine
US1381205A Typographic machine
US1392017A Typographic machine
CA144997A Bottle filling machine
CA216381A Space band mechanism
CA216384A Assembling mechanism
CA207873A Multiple magazine for typographic machines
CA207871A Safety mechanism for typographic machines
CA242222A Matrix clamping and mould adjusting mechanism
CA217928A Casting mechanism for typographic machines
CA216382A Font distinguishing device
CA242221A Typographic machine