| 
 | The ornamental design for a trailer hitch locking device, as shown and described. | |||||||||||||||||
FIG. 1 is a perspective view of a trailer hitch locking device showing my new design;
FIG. 2 is a side elevation view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a rear elevation view thereof;
FIG. 7 is a side elevation view thereof opposite to that shown in FIG. 2;
FIG. 8 is a side elevation view thereof similar to that of FIG. 2 but with additional locking elements including a locking bar, spring cotter pin and a padlock all of which are depicted in broken lines for illustrative purposes only and form no part of the design claimed;
FIG. 9 is a front elevation view of FIG. 8.
Donalies, Richard W., Donalies, Wilma A.
| Patent | Priority | Assignee | Title | 
| 8152194, | Feb 04 2010 | Utility trailer security device | 
| Patent | Priority | Assignee | Title | 
| 2995025, | |||
| 4581908, | Jul 05 1984 | Trailer hitch lock | 
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Apr 10 1985 | DONALIES, RICHARD W | MIDWEST MARINE DEVELOPMENT CORPORATION A CORP OF ILLINOIS | ASSIGNMENT OF ASSIGNORS INTEREST | 004397/ | 0474 | |
| Apr 10 1985 | DONALIES, WILMA ANN | MIDWEST MARINE DEVELOPMENT CORPORATION A CORP OF ILLINOIS | ASSIGNMENT OF ASSIGNORS INTEREST | 004397/ | 0474 | |
| Oct 13 1986 | MIDWEST MARINE DEVELOPMENT CORPORATION, A CORP OF IL | DONALIES, RICHARD W | ASSIGNMENT OF ASSIGNORS INTEREST | 004616/ | 0485 | |
| Oct 13 1986 | MIDWEST MARINE DEVELOPMENT CORPORATION, A CORP OF IL | DONALIES, WILMA A | ASSIGNMENT OF ASSIGNORS INTEREST | 004616/ | 0485 | 
| Date | Maintenance Fee Events | 
| Date | Maintenance Schedule |