Subclass  (123)

Vacuum arc discharged coating  (23)

Subclass  (98)

Unknown  (1)

Apparatus  (45)

Unknown  (1)

Electrolytic  (34)

Object protection  (5)

Subclass  (15)

With control means responsive to sensed condition  (3)

Subclass  (16)

And programmed, cyclic, or time responsive control means  (2)

Subclass  (19)

Internal battery

Subclass  (7)

With programmed, cyclic, or time responsive control means  (2)

Subclass  (12)

With measuring, testing, or sensing means  (5)

Subclass  (21)

Internal battery  (2)

Subclass  (11)

With gas or vapor removing or treating means

Plural cells used or protected  (1)

Subclass  (2)

Internal battery  (5)

Subclass  (10)

Resistor or impedance in series between anode and object  (4)

Subclass  (16)

With fluid filter  (2)

Subclass  (7)

With bypass means  (1)

Anode moving relative to object

Subclass  (2)

With fluid inlet or outlet means used or protected  (4)

Subclass  (35)

Dielectric coating, casing, or section

Subclass  (23)

Rigid anode with rigid support  (3)

Subclass  (10)

More than half of anode is or has coating, covering, or shield  (9)

Subclass  (24)

Dielectric coating, covering, or shield  (4)

Subclass  (13)

Flexible cable, chain, or wire anode or support  (2)

Subclass  (6)

Earth grounded object or protection means  (4)

Subclass  (29)

Copper and zinc electrically coupled or alloyed into one or more electrodes  (1)

Subclass  (15)

Anode contains aluminum  (3)