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WICHITA TANK MANUFACTURING, LTD.
| WICHITA TANK MANUFACTURING, LTD. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20090090581 | STAIR SYSTEM FOR OILFIELD TANK - A stair system for a mobile storage tank includes a platform subsystem attached to a wall of the mobile storage tank, a staircase subsystem coupled to the platform subsystem, and a rail subsystem attached to the staircase subsystem. The platform subsystem includes a retractable platform extension, and the staircase and rail subsystem are configured to be extended for use and retracted for transit and non-use modes of operation. | 04-09-2009 |