Printing And Office Machinery Patents (Class D18)
Typewriter or calculator (Class D18/1)
Copy reproducing equipment (Class D18/36)
Document handler (Class D18/46)
Printing equipment (Class D18/50)
Type or type face (Class D18/24)
Bookbinding or document cutting, trimming, or shredding machine (Class D18/34.1)
Pneumatic dispatch tube or system (Class D18/35)
Mail handling machine (Class D18/35.1)
Miscellaneous (Class D18/99)