PRATT JOHNS CO has a total of 68 patent applications. Its first patent ever was published in 1900. It filed its patents most often in United States. Its main competitors in its focus markets electrical machinery and energy, transport and machines are JUNG ALBRECHT, PERKINS ELECTRIC SWITCH MFG CO and VERNON HOPE.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 68 |
# | Industry | |
---|---|---|
#1 | Electrical machinery and energy | |
#2 | Transport | |
#3 | Machines | |
#4 | Measurement | |
#5 | Packaging and shipping | |
#6 | Civil engineering |
# | Name | Total Patents |
---|---|---|
#1 | Cole Robert C | 39 |
#2 | Hooker Duncan C | 8 |
#3 | Sachs Joseph | 8 |
#4 | Kempton Willard H | 5 |
#5 | Cole Robert Charles | 2 |
#6 | Cole Robert Chas | 1 |
#7 | Alvord Elliot Landon | 1 |
#8 | Mueller Henry N | 1 |
#9 | Williams Harry R | 1 |
#10 | Roberts Edward E | 1 |
Publication | Filing date | Title |
---|---|---|
US1490943A | Screw-plug fuse | |
US1407785A | Electric safety fuse | |
US1400661A | Inclosed fuse | |
US1396731A | Cartridge-fuse | |
US1400660A | Renewable fuse | |
US1351203A | Plug-cut-out base | |
US1295168A | Knock-out for electrical boxes. | |
US1287451A | Electrical cut-out. | |
US1277045A | Electric-fuse link. | |
US1277044A | Inclosed electric fuse. | |
US1275391A | Cut-out. | |
US1273151A | Electrical cut-out. | |
US1244589A | Inclosed electric fuse. | |
US1234133A | Box-fastening. | |
US1227752A | Fusible element for inclosed electrical fuses. | |
US1227753A | Fuse-block. | |
US1235555A | Inclosed electric fuse. | |
US1234544A | Fuse-block. | |
US1213777A | Inclosed-fuse element. | |
US1180397A | Wire-clamp. |