| Number | Name | Date | Kind |
|---|---|---|---|
| D249273 | Day | Sep 1978 | |
| D288939 | Boon | Mar 1987 | |
| D321608 | Hay | Nov 1991 | |
| D326378 | Yunger et al. | May 1992 | |
| 401389 | Stoddard | Apr 1889 | |
| 1706307 | McCarthy | Mar 1929 | |
| 1785815 | Kurtz, Jr. | Dec 1930 | |
| 2278403 | Jonas | Mar 1942 | |
| 2291675 | Arelt | Aug 1942 | |
| 2291724 | Jonas | Aug 1942 | |
| 2623527 | Guichard | Dec 1952 | |
| 2665808 | McAlister | Jan 1954 | |
| 3365259 | Heisman et al. | Jan 1968 | |
| 3396731 | Peebles | Aug 1968 | |
| 3428186 | Michel | Feb 1969 | |
| 3788718 | Bjorn et al. | Jan 1974 | |
| 4077520 | Stevenson | Mar 1978 | |
| 4974733 | Evans | Dec 1990 | |
| 5184737 | Hardy | Feb 1993 | |
| 5209386 | Allison | May 1993 | |
| 5477967 | Voorhees et al. | Dec 1995 | |
| 5575396 | Smed | Nov 1996 |
| Number | Date | Country |
|---|---|---|
| 752881 | Oct 1933 | FRX |
| 1384026 | Nov 1964 | FRX |
| 186568 | Sep 1936 | CHX |
| 518234 | Feb 1940 | GBX |
| Entry |
|---|
| Tapper Business Supplies Catalog, pp. 155, 158-161, 163, 173, 178, 197, and 226, Dec. 1995. |
| "Active File" manufactured by Neat Ideas.RTM. Division of Fellows Manufacturing Co., Itasca, IL, no date given. |