Devin S Sper

7305327, Dec 4, 2007

Jan 30, 2006

11/343133

Devin Sper - Scottsdale AZ, US

Sper Scientific Ltd - Scottsdale AZ

G06F 17/40
G06F 19/00

702187, 340500, 340531, 3405391, 34053911, 34053922, 34053926, 340601, 34087001, 34087028, 702 1, 702127, 702188, 702189, 702198

A wireless metering device for real time measuring of at least one parameter has a probe for measuring the at least one parameter. The probe will wirelessly transmit real time measured values. A meter is wirelessly coupled to the probe. The meter is used for displaying the real time measured values.

8480428, Jul 9, 2013

Jan 9, 2012

13/346190

Devin Sper - Scottsdale AZ, US
Yufeng Ma - Beijing, CH

H01R 13/52

439521, 439578

A pH meter and probe with a screw-down connector that converts a standard BNC pH probe connector into an IP67 waterproof connection.

20070017292, Jan 25, 2007

Jul 25, 2005

11/190099

Devin Sper - Scottsdale AZ, US

G01H 3/10

073646000

A sound level monitor device has a microphone. A sound level measurement circuit is coupled to the microphone. The sound level measurement circuit takes sound signals monitored by the microphone and converts the sound signals to digital signals. A display is coupled to the sound level measurement circuit. The display will show the different measurement signal values. A single control button is coupled to the sound level measurement circuit. Pressing the control button a first time activates the sound level measurement circuit so a current measurement signal value is shown on the display. Pressing the single control button a second time causes a highest recorded measurement signal value, since the sound level measuring device has been presently activated, to be shown on the display. The highest recorded measurement signal value remains on the display until a higher recorded measurement signal is monitored. Pressing and holding the single control button for a predetermined time frame deactivates the sound level monitor device.