| Year | 1955 |
| Date | 14-Jul |
| Volume | 113 |
| Issue | 2,825 |
| Page | 37 |
| Category | Electrical |
| Part | |
| Title | Adjustable-Angle Light Fittings |
| Author | E.T.P. |
| Notes | The Design and Construction of Self-Balancing Universal Wall and Desk Lamps. Counterbalancing, spring compensation |