We are a manufacturing and trading company, operating in the field of building materials. At SADO BREVET’s SRL Research and Technology Department, we study every new material and technology, while developing and improving the quality of our products.


The rights of ZEUS Locking Systems inventions are managed by SADO BREVET SRL, a company established in Bucharest, Romania. Shareholder and legal representative is Mr. Dimitris Karagiannis.


Discerning the growing need for anti-burglar protection of residential and business premises, we focus on the highest security standards in the market for architectural aluminium frame products of windows, doors and shutters.

Offering a total burglarproof, energy efficient and weatherproof solution for every home or business, SADO BREVET SRL Zeus Locking System comes in two different formats of windows / doors / shutters, the opening technology and the sliding technology.


As a result, for these two inventions of the new burglar-proof technology that compose Zeus Locking System, SADO BREVET SRL has officially filled and patents have been granted internationally in Europe (40 countries), Eurasia (9 countries), Middle East (14 countries), Ukraine, the U.S.A., Canada, Brazil, South Africa, Australia, India, South Korea, China, etc.


ZEUS Locking Systems are certified for:

  • Opening safety – category RC3, having passed to RC4 with static load of 1.000 kilos
  • Sliding safety – category RC2
  • Opening system is characterized with indication “A” of technological background
  • Sliding system is characterized with indication “Y” of technological background


SADO BREVET's SLR unique and internationally patented technology merges the window with the case, creating a solid firm surface. Unique security technology locks fully perimetrically the frame, making it impossible to penetrate, dismantle and invulnerable to unauthorized break-in.


SADO BREVET SRL Zeus Locking Systems is a brilliant invention, offering maximum security and greater value-added than any other system in the market today. With an unprecedented robustness, SADO BREVET SRL Zeus Locking System is officially certified, having acquired the highest classification ever achieved by similar systems from:

  • Giordano Institute
  • IFT Rosenheim
  • World Intellectual Property Organisation
  • European Patent Office
  • Hellenic Industrial Property Organisation
  • Qualicoat


SADO BREVET SLR technology is developed without compromising your high expenditure, allowing all other features of conventional windows and doors to be applicable, such as open-tilt or lift-and-slide mechanisms. Designed and manufactured under the highest standards, it is a high-end and cost-effective solution – without compromising quality – that offers remarkable safety to any aluminium frame.