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SMITH & STONE LTD

Overview
  • Total Patents
    18
About

SMITH & STONE LTD has a total of 18 patent applications. Its first patent ever was published in 1927. It filed its patents most often in United States. Its main competitors in its focus markets electrical machinery and energy, machines and materials and metallurgy are ARK LES SWITCH CORP, KEARNEY JAMES R CORP and KYLE CORP.

Patent filings in countries

World map showing SMITH & STONE LTDs patent filings in countries
# Country Total Patents
#1 United States 18

Patent filings per year

Chart showing SMITH & STONE LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Frederick Duffield Joseph 6
#2 Trust Company The Royal 5
#3 Duffield Joseph F 4
#4 Godziemba-Dambski Zdzislaw R 4
#5 Trygve Wold 3
#6 Herbert Redshaw 2
#7 Silenius Robert T 1
#8 Wesley Nunns John 1
#9 Barnet Stone 1
#10 Richard Glynn John 1

Latest patents

Publication Filing date Title
US3644879A Snap-in contact terminal
US3381103A Actuator and contact assembly for rotary action switches
US3383640A Quick connect wire connector
US3305650A Manually operable switches such as alternating current switches suitable for domestic installations
US3348221A Indicator light assembly
US3285655A Baby car seat
US3288959A Lampholder with current tap
US3287529A Plug fuse
US3333233A Skeleton contacts for electrical connectors
US3333234A Female skeleton contacts for lamp sockets
US3260985A Pin-type electrical connector
US3217286A Pin-type electrical connector
US3151757A Container closure
US2693024A Method of making insulated pull chains
US2555524A Electric lamp socket for elongated tubular lamps
US1984954A Fuse plug
US1829685A Process for producing thermal and electrical insulating pads
US1821987A Fuse block terminal structure