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LEWELLEN MFG COMPANY

Overview
  • Total Patents
    11
About

LEWELLEN MFG COMPANY has a total of 11 patent applications. Its first patent ever was published in 1920. It filed its patents most often in United States. Its main competitors in its focus markets mechanical elements, machines and chemical engineering are PAPARONI PAOLO, KAMO SEIKO KK and TECHNIQUE INTEGRALE LA.

Patent filings in countries

World map showing LEWELLEN MFG COMPANYs patent filings in countries
# Country Total Patents
#1 United States 11

Patent filings per year

Chart showing LEWELLEN MFG COMPANYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Lewellen Darcy E 10
#2 Lewellen Emmons F 1
#3 Lewellen Rodman H 1

Latest patents

Publication Filing date Title
US2976739A Adjustable pulley
US1601865A Automatic speed-controlling device
US1686916A Mechanically-operated speed-controlling device
US1691294A Automatic speed-controlling device
US1687339A Automatic speed-controlling device
US1446387A Pin drive for variable-speed mechanism
US1459679A Oiling device
US1375053A Bearing for variable-speed transmission mechanism
US1422585A Thrust bearing
US1377593A Variable-speed transmission
US1386939A Frame construction