| 摘要 |
1471566 Keyhole escutcheons GKN-STENMAN AB 30 Sept 1974 [5 Oct 1973] 42409/74 Heading E2A A keyhole escutcheon plate has a circular resilient lip 1a which engages notches 4a in the key to releasably retain it and guide its rotation. The escutcheon may be of metal or plastics and the lip may be of the same or different material. The escutcheon is secured by screws in holes 2. The key may be permanently retained and have a knob handle. |
