1
Hans Joachim Eggert, Heinrich Zenkert, Rudi Kuehne, Otto Oberberger: Electrical housing with stacking bumpers. Siemens Aktiengesellschaft, Hill Van Santen Steadman Chiara & Simpson, July 22, 1980: US04213532 (25 worldwide citation)

A rectangular housing, containing for instance, electronic communication and measuring devices, is protected from shocks and is made stackable together with like housings by a dumbbell-shaped rubber member at each vertical edge thereof, thickened in each end to protect respective corners of the hous ...


2
Electrical housing with stacking bumpers. Siemens, March 25, 1977: FR2322509-A1

A rectangular housing, containing for instance, electronic communication and measuring devices, is protected from shocks and is made stackable together with like housings by a dumbbell-shaped rubber member at each vertical edge thereof, thickened in each end to protect respective corners of the hous ...