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DAHL NORMAN C

Overview
  • Total Patents
    11
About

DAHL NORMAN C has a total of 11 patent applications. Its first patent ever was published in 1957. It filed its patents most often in United States and Germany. Its main competitors in its focus markets machines, mechanical elements and measurement are BABEJ JIRI, MAURI FLLI SRL and STELLIN DOMNIC V.

Patent filings in countries

World map showing DAHL NORMAN Cs patent filings in countries
# Country Total Patents
#1 United States 10
#2 Germany 1

Patent filings per year

Chart showing DAHL NORMAN Cs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Dahl Norman C 10
#2 C Dahl Norman 1

Latest patents

Publication Filing date Title
US4338054A Solid externally threaded fasteners having greatly increased ductility
US4348141A Hollow externally threaded fasteners having greatly increased ductility
US4142266A Method for creating overload protection against yielding in bolts
US4037282A Process for creating overload protection against yielding in bolts
US4035858A Process for the preuse work-hardening of bolts
US3867865A Two-part, two-material fastening element
US3890876A Two-part, two-material fastening element
US3089303A Automatic telephone timer
US2900613A Unbonded electric strain gage