| All Patents in class 451/311 |
Patents 91 -
102
of 102
      |
| Number | Date | Patentee | Title | Type |
| 3,209,495 | Oct. 05, 1965 | P.J. Robischung | Belt abrader | |
| 3,209,496 | Oct. 05, 1965 | P.J. Robischung | Belt abrader adjustment mechanism | |
| 3,429,077 | Feb. 25, 1969 | L.V. Grover | Sander | belt sanders |
| 3,510,988 | May 12, 1970 | V.K. Mason | Sander device | belt sanders |
| 3,512,307 | May 19, 1970 | R.W. Taylor | Portable sanding machine improvements | handheld power sanders |
| 3,538,650 | Nov. 10, 1970 | A. Pollak | Belt sanders | sanding machines |
| 3,577,684 | May 04, 1971 | J. Zigmant | Abrading machine with steering roll and tensioned abrading belt | |
| 3,608,245 | Sep. 28, 1971 | R.G. Fair, Jr., C.D. Brotherton | Belt sanding machine | sanding machines |
| 4,021,970 | May 10, 1977 | W.C. Przygocki | Wide abrasive belt tension and oscillation assembly | sanding machines |
| 4,262,455 | Apr. 21, 1981 | R. Rettew | Head Positioning for a Belt Grinder | surface grinders |
| 4,267,671 | May 19, 1981 | R. Rettew | Positioning Of An Abrasive Belt On A Grinding Machine | surface grinders |
| 4,368,597 | Jan. 18, 1983 | E.H. Fleckenstein | Miniature belt grinder | handheld power sanders |
