необычный замок

Comments submitted by MrMonkeyMonk: “This looks like a german lock to me. If you want to know more, it seems to have been awarded by the VDI, which is a german engineering club, in 1991 via the Carl-Eduard-Schulte-Stiftung. It seems to have been a diploma project, but I can not figure out who did it. Maybe you want to call the VDI. website to their award winners Phone: 49 211 6214-0 Mail: vdi@“ Dan Neuenswander found the patent of this lock: