|
The ornamental design for a portable oil well walking beam pump jack, substantially as shown and described. |
|||||||||||||||||
FIG. 1 is a right side elevational view of the portable oil well walking beam pump jack which incorporates my new design, disposed in a folded position;
FIG. 2 is a right side elevational view thereof which incorporates my new design, disposed in a raised position;
FIG. 3 is a left side elevational view thereof illustrated in FIG. 2;
FIG. 4 is a rear elevational view thereof illustrated in FIG. 2;
FIG. 5 is a front elevational view thereof illustrated in FIG. 2;
FIG. 6 is a top plan view thereof shown in FIG. 2; and
FIG. 7 is a bottom plan view thereof illustrated in FIG. 2.
| Patent | Priority | Assignee | Title |
| D281851, | May 03 1983 | PACK & GIBBS, INC , 837 EXPLORER STREET, RAPID CITY, S D 57701 | Beverage dispenser or similar article |
| D286553, | Apr 30 1984 | Pen stand | |
| D613545, | Aug 08 2008 | Beverage dispenser | |
| D636791, | Sep 22 2008 | Weir Minerals Australia, Ltd | Mine dewatering apparatus |
| D666884, | Nov 05 2009 | HUFF, RONALD | Oil and natural gas pump bottle opener |
| D835678, | Jul 08 2017 | DAQING DANNUO PETROLEUM TECHNOLOGY DEVELOPMENT CO , LTD | Pumping unit |
| Patent | Priority | Assignee | Title |
| 3055228, | |||
| 3136166, | |||
| 4050858, | Apr 05 1976 | Well pumping apparatus | |
| 4070135, | Jan 21 1977 | Mobile pumping apparatus |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Date | Maintenance Fee Events |
| Date | Maintenance Schedule |