 
                 Patent Grant
 Patent Grant
                     D453344
 D453344
                    | Number | Name | Date | Kind | 
|---|---|---|---|
| 4046483 | Sutherland | Sep 1977 | A | 
| 4046484 | Holz, Sr. et al. | Sep 1977 | A | 
| D323510 | Allen et al. | Jan 1992 | S | 
| 5108220 | Allen et al. | Apr 1992 | A | 
| 5238323 | Allen et al. | Aug 1993 | A | 
| D344736 | Allen et al. | Mar 1994 | S | 
| 5480257 | Allen | Jan 1996 | A | 
| 5632570 | Balling | May 1997 | A | 
| 5658089 | Allen | Aug 1997 | A | 
| 5685667 | Allen | Nov 1997 | A | 
| 5803658 | Allen | Sep 1998 | A | 
| 5816740 | Jaszkowiak | Oct 1998 | A | 
| D400542 | Allen | Nov 1998 | S | 
| 5890833 | Allen et al. | Apr 1999 | A | 
| 6053660 | Allen et al. | Apr 2000 | A | 
| Entry | 
|---|
| Whiteman Industries Inc., HTH-Series Ride-On Power Trowels, Jan. 1997. | 
| Whiteman Industries Inc., Ride-On Power Trowels brochure, Mar. 1997. |