Electricity: electrical systems and devices – Electric charge generating or conducting means – For application to living beings
Reexamination Certificate
2006-07-28
2009-12-08
Jackson, Stephen W (Department: 2836)
Electricity: electrical systems and devices
Electric charge generating or conducting means
For application to living beings
Reexamination Certificate
active
07630190
ABSTRACT:
Mechanism (8) for adjusting the resistance value of an earth electrode (7) connected to an electrification unit (2) of an electric fence (1), includes a control element (13) for causing the resistance value of the earth electrode to vary.
REFERENCES:
patent: 2316211 (1943-04-01), Agnew et al.
patent: 4270735 (1981-06-01), Gavin
patent: 6398191 (2002-06-01), Forsberg
patent: 2058311 (1972-06-01), None
patent: 0381585 (1990-08-01), None
Hamm Valery
Mulet-Marquis Yves
Jackson Stephen W
Lacme Holding
Young & Thompson
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