| Number | Name | Date | Kind |
|---|---|---|---|
| D239155 | Kent et al. | Mar 1976 | S |
| 3953184 | Stockford et al. | Apr 1976 | A |
| 3970437 | Van Diepenbrock et al. | Jul 1976 | A |
| 4026687 | Berz | May 1977 | A |
| 4047907 | Knutsson et al. | Sep 1977 | A |
| 4099937 | Ufken et al. | Jul 1978 | A |
| 4140502 | Margraf | Feb 1979 | A |
| 4144043 | Johnston | Mar 1979 | A |
| 4156600 | Jacobson | May 1979 | A |
| 4201256 | Truhan | May 1980 | A |
| 4202142 | Van Fossen | May 1980 | A |
| 4223748 | Barendsen | Sep 1980 | A |
| 4230468 | Rebours et al. | Oct 1980 | A |
| D257774 | Pierson | Jan 1981 | S |
| 4244715 | Eisenbarth | Jan 1981 | A |
| 4266673 | Haidlen et al. | May 1981 | A |
| 4272260 | Klein et al. | Jun 1981 | A |
| 4275531 | Van Fossen | Jun 1981 | A |
| 4285707 | Pfenninger | Aug 1981 | A |
| 4286974 | Schminke et al. | Sep 1981 | A |
| 4330400 | Schmidt | May 1982 | A |
| 4336040 | Haberi | Jun 1982 | A |
| 4348057 | Parenti et al. | Sep 1982 | A |
| 4416673 | Kirchen et al. | Nov 1983 | A |
| D274851 | Schmitz | Jul 1984 | S |
| 4543111 | Muller et al. | Sep 1985 | A |
| 4655806 | Bowersox | Apr 1987 | A |
| 4657567 | Callgren et al. | Apr 1987 | A |
| 4673424 | Range | Jun 1987 | A |
| 4792382 | Lorenz et al. | Dec 1988 | A |
| 4878927 | Margraf | Nov 1989 | A |
| 4984397 | Van Leeuwen | Jan 1991 | A |
| 5089037 | Marsolais | Feb 1992 | A |
| 5185968 | Lyras | Feb 1993 | A |
| 5221300 | Hoogland et al. | Jun 1993 | A |
| 5271751 | Lagler | Dec 1993 | A |
| D343706 | Gurstein | Jan 1994 | S |
| 5584901 | Bakharev et al. | Dec 1996 | A |
| 5690709 | Barnes | Nov 1997 | A |
| 5800246 | Tomioka | Sep 1998 | A |
| 5839951 | Tomioka | Nov 1998 | A |
| 5983840 | Riccius et al. | Nov 1999 | A |
| 6051054 | Ahman | Apr 2000 | A |
| 6195837 | Vanderlinden | Mar 2001 | B1 |
| 6224645 | Rydin et al. | May 2001 | B1 |
| 6254362 | Higuchi et al. | Jul 2001 | B1 |
| 6319295 | Tojner | Nov 2001 | B1 |
| 6521051 | Lutich | Feb 2003 | B1 |
| Entry |
|---|
| Pipe Restoration; User's Manual for Air Filter. |