HILLIARD JOHN D has a total of 14 patent applications. Its first patent ever was published in 1906. It filed its patents most often in United States and Canada. Its main competitors in its focus markets electrical machinery and energy, transport and civil engineering are LANGE EMIL, NEUMANN HOCHSPANNUNGS APP G M and CIE GENERAL DELECTRICITE.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 13 | |
#2 | Canada | 1 |
# | Industry | |
---|---|---|
#1 | Electrical machinery and energy | |
#2 | Transport | |
#3 | Civil engineering |
# | Technology | |
---|---|---|
#1 | Electric switches | |
#2 | Cables and insulators | |
#3 | Swimming pools | |
#4 | Magnets and transformers | |
#5 | Dry-docking of vessels |
# | Name | Total Patents |
---|---|---|
#1 | Hilliard John D | 14 |
#2 | Parsons Charles E | 2 |
Publication | Filing date | Title |
---|---|---|
US2381592A | Circuit breaker | |
US2232003A | Circuit interrupter | |
US2228231A | Circuit interrupter | |
US2140475A | Circuit breaker | |
US2138323A | Accelerated break circuit interrupter | |
US1262341A | Salvage apparatus. | |
US1009748A | Switching device for electrical circuits. | |
US1069782A | Electric insulator. | |
US949033A | Electrical switch. | |
CA113602A | Electrical oil switch | |
US976654A | Electrical switch. | |
US1001144A | Preserving wooden poles. | |
US857062A | Electrical transformer. | |
US914837A | Line-support. |