1. Instruments for Shaping Distal Femoral and Proximal Tibial surfaces: Patent Number 4,759,350; Issued July 26, 1988.

2. Modular Implant (Hip); Patent Number 5,019,108; Issued May 28, 1991

3. Patellar Clamp and Reamer with Adjustable Stop; Patent Number 5,129,907; Issued July 14, 1992.

4. Femoral Prosthesis Component System for Knee Replacement Surgery: Patent Number 5,226,915; Issued July 13, 1993.

5. Knee Prosthesis Provisional apparatus and Resection Guide and Method of Use in Knee Replacement Surgery; Patent Number 5,258,031; issued November 2, 1993.

6. Apparatus and Method for Implanting a Prosthetic Acetabular Cup and Then Testing the Stability of the Implant; Patent Number 5,320,625; Issued June 14, 1994.

7. Method for Resecting the Knee Using a Resection guide and Provisional Prosthetic Component; Patent Number 5,458,645; Issued October 17, 1995.

8. Femoral Milling Instrumentation for Use in Total Knee Arthroplasty with Optional Cutting Guide Attachment; Patent Number 5,474,559; Issued December 12, 1995.

9. Orthopaedic Bone Cutting Guide; Patent Number Des. 376,202; Issued December 3, 1996.

10. Device for measuring leg Length and OffSet for a Total Hip Replacement; Patent Number 5,700,268; Issued December 23, 1997.

11. Femoral Milling Instrumentation for use in Total Knee Arthroplasty with Optional Cutting Guide Attachment; Patent Number 5,743,915; Issued April 28, 1998.

12. Femoral Milling Instrumentation for use in Total Knee Arthroplasty with Optional Cutting Guide Attachment; Patent Number 5,769,855; Issued June 23, 1998.

13. Femoral Milling Instrumentation for use in Total Knee Arthroplasty With Optional Cutting Guide Attachment; Patent Number 5,853,414, Issued December 29, 1998.

14. Guide for Femoral Milling Instrumentation for use in Total Knee Arthroplasty; Patent Number 5,860,981; issued January 19, 1999.

15. Tibial Milling Guide System for use in Total Knee Arthroplasty; Patent Number 5,908,424; Issued June 1, 1999.

16. Orthopaedic Positioning Apparatus; Patent Number 5,951,564; Issued September 14, 1999.

17. Paella Height Gauge and Method of Locating a Patella Using Same; US Patent Number 6,080,196; Issued June 27, 2000.

18. Tibial Sizing Guage; European Patent Number 1329199; Issued June 18, 2003; US/16.05.94/USA 242987.

19. Tibial Milling Depth Guage; European Patent Number 1329198; Issued June 18, 2003; US/16.05.94/USA 242987.

20. Reference Guide for Tibial Milling; European Patent Number 1329200; Issued June 18, 2003; US/16.05.94/USA 242987.

21. Guided osteotomes. Patent Pending 4001-0007.

22. Femoral Milling Instrumentation for Use In Total Knee Arthroplasty With Optional Cutting Guide Attachment, Italian Patent Number 01200108.7; issued August 24, 2004.