Canadian Patent Classifications
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| Class 281 Books, strips, sheets |
|---|
| cpc | description |
| 281/1 | (1) Books |
| 281/2 | (1) Books (2) Page Holders and Page or Line Markers |
| 281/3 | (1) Books (3) Covers |
| 281/4 | (1) Books (3) Covers (4) Parts of Covers and Attachments to Covers |
| 281/5 | (1) Books (3) Covers (5) Flexible |
| 281/6 | (1) Books (6) Bindings |
| 281/7 | (1) Books (6) Bindings (7) Adhesive |
| 281/8 | (1) Books (8) Pads and Attachments to Pads |
| 281/9 | (1) Books (9) Indexing Tabs and Cut-Aways |
| 281/10 | (10) Strips |
| 281/11 | (10) Strips (11) Holders |
| 281/12 | (12) Sheets |
| 281/13 | (13) Miscellaneous |
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