| G | SK | PHYSICS |
| G09 | KL | EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS |
| G09D | UKL | RAILWAY OR LIKE TIME OR FARE TABLES; PERPETUAL CALENDARS |
| G09D 1/00 | HGR | Railway or like time or fare tables; Indicating or reading aids therefor (incorporating maps or route diagrams, e.g. railway routing charts G09B 29/00) [1, 2006.01] |
| G09D 3/00 | HGR | Perpetual calendars (printed calendar blocks B42D 5/04; clockwork-driven perpetual calendars G04B 19/24) [1, 2006.01] |
| G09D 3/02 | UGR1 | | . | with interchangeable members bearing the indicia [1, 2006.01] |
|
| G09D 3/04 | UGR1 | | . | wherein members bearing the indicia are movably mounted in the calendar [1, 2006.01] |
|
| G09D 3/06 | UGR2 | | . . | with rotatable members [1, 2006.01] |
|
| G09D 3/08 | UGR3 | | . . . | of disc form [1, 2006.01] |
|
| G09D 3/10 | UGR2 | | . . | with members in band form [1, 2006.01] |
|
| G09D 3/12 | UGR1 | | . | electrically operated [1, 2006.01] |
|