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			 The ornamental design for a threaded nut and retainer unit, as shown and described.  | 
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FIG. 1 is a perspective view of a threaded nut and retainer unit showing our new design;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a side view thereof, the opposite side being a mirror image;
FIG. 5 is an end view thereof, the opposite end view being a mirror image;
FIG. 6 is a perspective view of a second embodiment of our design;
FIG. 7 is a top view of the second embodiment;
FIG. 8 is a bottom view of the second embodiment;
FIG. 9 is a side view of the second embodiment, the opposite side view being a mirror image; and,
FIG. 10 is an end view of the second embodiment, the opposite end view being a mirror image.
Nimmo, Frank D., Merz, William R., Newton, W. Howard
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Apr 21 2000 | NEWTON, W HOWARD | ROLCON, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 011549 | /0701 | |
| Jun 19 2000 | NIMMO, FRANK D | ROLCON, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 011549 | /0701 | |
| Jun 19 2000 | MERZ, WILLIAM R | ROLCON, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 010920 | /0317 | |
| Jun 19 2000 | NEWTON, W HOWARD | ROLCON, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 010920 | /0317 | |
| Jun 26 2000 | Rolcon, Inc. | (assignment on the face of the patent) | / | |||
| Dec 14 2000 | MERZ, WILLIAM R | ROLCON, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 011549 | /0701 | 
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