Learn more

RUTHVEN ALFRED L

Overview
  • Total Patents
    19
About

RUTHVEN ALFRED L has a total of 19 patent applications. Its first patent ever was published in 1906. It filed its patents most often in United States. Its main competitors in its focus markets transport, machines and civil engineering are HERBERT SCHWEYER DANIEL, CONTINUOUS TRAIN CONTROL CORP and BERNARD HARTLEY PETER.

Patent filings in countries

World map showing RUTHVEN ALFRED Ls patent filings in countries
# Country Total Patents
#1 United States 19

Patent filings per year

Chart showing RUTHVEN ALFRED Ls patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Transport
#2 Machines
#3 Civil engineering

Top inventors

# Name Total Patents
#1 Ruthven Alfred L 19

Latest patents

Publication Filing date Title
US2435367A Parachute and means for projecting and operating the same
US1798558A Automanual resetting device
US1754907A Continuous train control
US1774728A Automanual resetting device
US1754906A Simplex normal danger automanual train-control apparatus
US1754905A Run-down and reset train control
US1715250A Continuous train control
US1531576A Simplex train control
US1556358A Simplex train control
US1556357A Simplex train control
US1531574A Simplex train control
US1531573A Simplex train control
US1507431A Simplex train control
US1470110A Insulated rail joint
US1507430A Simplex train control
US1335260A Combination automatic and manual air-brake system and automatic train control and signal mechanism
US1058107A Controlling mechanism.
US883350A Combination signal and train-stopping apparatus.
US843703A Railway signal system.