A surge protection circuit having x protected paths, a first input connector connected to all x of the protected paths and a second input connector connected to fewer than x of the protected paths. For example, the second input connector may be connected to x/2 of the protected paths. Using different...http://www.google.de/patents/US5691872?utm_source=gb-gplus-sharePatent US5691872 - Single line, multiple line telecommunications surge protector
