| 1967 MACOWSKI Design Desk Blotter KETCHAM Patent 32308 |
| 1902 BUSKIRK Convenient Blotter Desk Pad Patent 31195 |
| 1894 RUDGE New Ink Blotter DOOLITTLE Patent 30908 |
| 1903 WATSON Combined Ruler Blotter Patent 31225 |
| 1940 KOMOROUS Combined Blotter Holder Patent 31804 |
| 1929 KOSTENBADER Hand Holder Blotter Patent 31541 |
| 1898 WIGGINS Blotter Check Books Patent 31033 |
| 1938 BIENSTOCK Return Post Card Blotter Patent 31743 |
| 1941 TROLLEN Blotter Unit Design BROWN Patent 31849 |
| 1972 TESTRO Combined Blotter Pad Portfolio Patent 32342 |
| 1901 WEBSTER Blotter Holding Ruler Design Patent 31187 |
| 1897 KEELER New Combination Box Blotter Patent 30973 |
| 1938 STONE Blotter Pad Holder Desks Patent 31756 |
| 1878 BEACH Blotter Moistener MEYER Patent 30781 |
| 1953 SWAN Combined Blotter Ash Tray Design Patent 32132 |
| 1906 RAUPACH Low Cost Blotter Plate Patent 31234 |
| 1940 MITCHELL Rocking Blotter OPPENHEIMER Patent 31809 |
| 1953 SWAN Combined Blotter Stamp Box Patent 32133 |
| 1954 QUIST Design Blotter Calendar Holder Patent 32137 |
| 1870 BRYANT Blotter Pad Design Patent 10226 |
| 1939 GRUNZWEIG Rotary Blotter Penholder Patent 31767 |
| 1945 COTTON Roller Blotter Ornamentation Patent 31919 |
| 1963 MAGNIN Holder Perfume Testing Blotter Patent 32257 |