Printed Matter Patents (Class 283)
Calendar (Class 283/2)
Ballots (Class 283/5)
Method (Class 283/67)
Stamp (Class 283/71)
Having revealable concealed information, fraud preventer or detector, use preventer or detector, or identifier (Class 283/72)
Cryptographic record template (Class 283/17)
Transportation (Class 283/23)
Maps (Class 283/34)
Indexed (Class 283/36)
Mathematics (Class 283/44)
Writing (Class 283/45)
Language (Class 283/46)
Tally (Class 283/48.1)
Theater tickets (Class 283/53)
Insurance (Class 283/54)
Inventories (Class 283/55)
Advertising (Class 283/56)
Banking (Class 283/57)
Sales document (Class 283/60.1)
Strips and leaves (Class 283/61)
Strips (Class 283/62)
Book (Class 283/63.1)
With sliding leaf (Class 283/65)
Accounting or listing form or sheet (Class 283/66.1)
Chart or graph (Class 283/115)
Envelope (Class 283/116)
Miscellaneous (Class 283/117)

Cross-Reference Art Collections

Medical record (Class 283/900)
Concealed data (Class 283/901)
Anti-photocopy (Class 283/902)
Lottery ticket (Class 283/903)
Credit card (Class 283/904)

Foreign Patent Art Collections

Class-related foreign documents (Class 283/FOR000)