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KEYSTONE WATCH CASE COMPANY

Overview
  • Total Patents
    27
About

KEYSTONE WATCH CASE COMPANY has a total of 27 patent applications. Its first patent ever was published in 1893. It filed its patents most often in United States. Its main competitors in its focus markets measurement, machines and consumer goods are WERNER SCHMITZ, FELSA S A and WATERBURY CLOCK CO.

Patent filings in countries

World map showing KEYSTONE WATCH CASE COMPANYs patent filings in countries
# Country Total Patents
#1 United States 27

Patent filings per year

Chart showing KEYSTONE WATCH CASE COMPANYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Freund Joseph A 6
#2 Mehl Walter B 4
#3 Ebelhare William Henry 3
#4 Levy Bernard 3
#5 August Beucke 1
#6 Nutting Granville 1
#7 Perry Earle Sloan 1
#8 Cook Wilbur C 1
#9 Clark William B 1
#10 Mink Fritz 1

Latest patents

Publication Filing date Title
US1610276A Watchcase pendant construction
US1498109A Removable-bar hanger for strap ends
US1498070A Strap attachment for wrist watchcases
US1499609A Watch-winding device
US1467427A Watch-winding mechanism
US1378408A Stem winding and setting device
US1180594A Method of forming watch-pendants.
US1198642A Expansion-bracelet links.
US1346591A Display-box for watches
US1084215A Watch-movement.
US1041335A Watch-movement.
US1029116A Stem winding and setting watch.
US1063251A Watch-movement.
US998792A Watchcase.
US1062645A Banking-pin.
US1013896A Watch.
US992118A Winding-indicator for watches.
US977320A Watch-movement.
US977321A Watch-movement.
US977286A Ratchet mechanism for watch-movements.