|
US3226593A
|
|
Excess-voltage protective device
|
|
US3064156A
|
|
Excess-voltage protective device
|
|
US2883574A
|
|
Lightning arrester
|
|
US2883573A
|
|
Excess-voltage protective device
|
|
US2883572A
|
|
Lightning arrester
|
|
US2710996A
|
|
Wood pole roof
|
|
US2569192A
|
|
High-voltage arc-spinning arrester
|
|
US2520258A
|
|
Secondary breaker
|
|
US2549635A
|
|
Fused switch
|
|
US2514163A
|
|
Load-break fuse switch
|
|
US2467443A
|
|
Voltage-limiting arc interrupter
|
|
US2501963A
|
|
Circuit-faulting fuse construction
|
|
US2498575A
|
|
High-voltage fuse construction
|
|
US2506938A
|
|
Lightning arrester construction
|
|
US2492652A
|
|
Flame suppressing arrester construction
|
|
US2473819A
|
|
Multiple gap arc interrupter
|
|
US2427975A
|
|
Bus support construction
|
|
US2520257A
|
|
Thermally operated secondary breaker
|
|
US2434011A
|
|
Voltage-limiting arc interrupter
|
|
US2434010A
|
|
Voltage-limiting arc interrupter
|
