WERN2

WERN INTER AB

STOCKHOLM, SWEDEN.

MECHANICAL HVAC CONSULTING ENGINEERING. DESIGN & INSPECTION: Water, Cooling, Piping, Heating, Ventilation, Air Conditioning, Automatic Control. Slide Rule Engineering Design

Decimal Point Slide Rule Calculator IWA1633 & 1638.

P-Phone Control AB

PeriProx Control Solutions.

WERN INTER AB

WERN INTER AB started 1963 in Sweden as the HVAC consulting engineering company

Wern Inter VVS AB. It was founded by Carl R. Wern, a Registered Professional Mechanical Engineer in the state of Michigan, USA. Carl´s brother George joined in 1964 the company.

Its present name Wern Inter AB was registered 1984.

The company has been engaged in,

Mechanical HVAC Engineering design, Control and Inspections for

Apartment, Hotel, Shopping, Office and Recreational buildings etc

- Swedish Embassy buildings in Europe, Africa, Asia and North America

Slide rule and calculator design

- Slide rule design awarded with gold medal to the Wern brothers

- Slide rule calculator design and production for various clients

Patents

- Touch control for lighting installations patented in 1972

- Patent licence for picture telephony on an ordinary subscriber line, sold 1976 to Ericsson.

Wern Inter AB HVAC engineering service was closed down year 2000.

P-Phone Control AB

The company (PPC) was founded 1992 by Carl together with his brother George in a joint

venture agreement with their brother Lars who is a registered European Patent Attorney.

PPC is specialized in proximity sensing R&D starting from a sensor device patented 1972 by

the Wern brothers in its first digital version following analog versions inspired by the Serbian -

American inventor Nikola Tesla. The first patent of interest to mention was registered 1928 in

the USA by the Soviet inventor Léon Theremin. He developed an electronic musical instrument controlled without physical contact.

The Wern brothers proximity sensor was first used in lighting installations for touch control and

thereafter in art museums as invisible shields preventing exhibited objects from being touched.

Today called PeriProx, the technology has been shown applicable for providing enhanced security

in 2000 to a Saab car and in 2009 to a Scania truck. Its usefulness for precise proximity sensing was shown in 2010 by Ericsson´s Connected Tree at Barcelona, Hannover and LasVegas international fairs followed by a permanent exhibition at Ericsson Studio in Kista and by a PeriProx patent in 2012 on a monitoring system for prevention against natural as well as man-made disasters.

In possession today of some patents originally filed worldwide by Scania, we want to

offer interested companies freedom to use the PeriProx technology with these patents for

developing proprietary artificial intelligence (Al) controlled proximity sensors providing

vehicles and others objects with invisible shields tailored to their periphery.

Read more below about PPC offer and historic in www.periprox.com.

Slide Rule Design

System Wern Slide Rule IWA 1633 & 1638.

Gold medal award at the International Exhibition in Brussels 1966. http://americanhistory.si.edu/collections/search/object/nmah_1811360

National Museum of American History: System Wern ABC Circular Slide Rule.

Slide Rule Reference

Oughtred Society, Roseville, California. USA. www.oughtred.org

International Slide Rule Musum, Denver Colorado, USA. www.sliderulemuseum.com