| IPC 7 English version |
| G09D-G09D00312 |
|
|
|
| SECTION G – PHYSICS |
|
| G 09 | EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS |
|
| G 09 D | RAILWAY OR LIKE TIME OR FARE TABLES; PERPETUAL CALENDARS (calendar blocks B42D 5/04; clockwork-driven G04B; comprising computing means G06C) |
|
1/ | 00 | Railway or like time or fare tables; Indicating or reading aids therefor (essentially incorporating maps or route diagrams G09B; railway routing charts G09B; display devices, e.g. railway indicator boards, G09F) |
|
3/ | 00 | Perpetual calendars |
|
3/ | 02 | . | with interchangeable members bearing the indicia |
|
3/ | 04 | . | wherein members bearing the indicia are movably mounted in the calendar |
|
3/ | 06 | . | . | with rotatable members |
|
3/ | 08 | . | . | . | of disc form |
|
3/ | 10 | . | . | with members in band form |
|
3/ | 12 | . | electrically operated |
|
 |
