|
The ornamental design for a knapsack frame, as shown. |
|||||||||||||||||
FIG. 1 is a front elevational view of a knapsack frame showing my new design;
FIG. 2 is a right side elevational view thereof; and
FIG. 3 is a bottom plan view thereof.
| Patent | Priority | Assignee | Title |
| D311094, | Dec 23 1987 | American Recreation Products, Inc. | Backpack frame |
| D352822, | Oct 03 1992 | MOUNTAIN EQUIPMENT, INC | Back pack support |
| D375402, | Mar 12 1996 | Knapsack |
| Patent | Priority | Assignee | Title |
| 3787718, | |||
| 3860157, | |||
| 3885722, | |||
| 3921867, | |||
| 4040548, | Mar 17 1976 | Flexible back pack frame | |
| SE51,947, |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jan 04 1977 | Sit 'N Sun Products (Proprietary) Limited | (assignment on the face of the patent) | / |
| Date | Maintenance Fee Events |
| Date | Maintenance Schedule |