FIELD: locking devices. SUBSTANCE: opposite surfaces of key are made completely different in color and this makes use of key easier. EFFECT: higher efficiency. 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| KEY | 2005 |
|
RU2294422C1 |
| COIN | 1998 |
|
RU2128933C1 |
| SWITCH WITH INDICATOR | 2019 |
|
RU2699417C1 |
| BUTTON | 1997 |
|
RU2121924C1 |
| DRAWING PIN | 2000 |
|
RU2164476C1 |
| ICE-CREAM | 1999 |
|
RU2177230C2 |
| NECKTIE | 1996 |
|
RU2108736C1 |
| TACK | 1998 |
|
RU2144475C1 |
| STAMP | 1999 |
|
RU2142652C1 |
| DEVICE FOR INFORMATION COMMUNICATION | 1997 |
|
RU2131620C1 |
