Stable power supply for spectrophotometerLtd., Doran Instrument Co · Journal of Scientific Instruments · 1960

Use of a Spectrophotometer Power Supply for ElectrophoresisBarnes, Marshall G.; Komarmy, Louis; Kerson, Robert · American Journal of Clinical Pathology · 1972

Desk and power supply for the Beckman spectrophotometerCarlson, Anton B.; Ayers, A. S.; Banks, Charles V. · Journal of Chemical Education · 1951

STOP "DRIFT" ERRORS IN Spectrophotometer Readings WITH THE FISHER Power Supply UnitChemical & Engineering News · 1950

`Microtact' relayL. L. Ltd. · 1961

Hewlett-Packard oscilloscope model 170AL. L. Ltd. · 1961

Abrasive Disk Cutting Off MachineL. A. C. Ltd. · 1946

Process and Operation TimersL. Ltd. · 1942

Engraving PenL. A. C. Ltd. · 1943

Solid Source Projection LampS. E. L. A. S. Ltd. · 1949

Alternating voltage regulatorJ. L. T. Ltd. · 1955

Automatic recording microdensitometerJ. L. A. C. Ltd. · 1956