|
| US3943389 | 2. Juli 1974 | 9. März 1976 | Motorola, Inc. | Temperature stabilization of surface acoustic wave substrates |
| US3975698 | 15. Dez. 1975 | 17. Aug. 1976 | The United States of America as represented by the Secretary of the Army | Fiber acoustic waveguide and system |
| US4077023 | 26. Nov. 1976 | 28. Febr. 1978 | Bell Telephone Laboratories, Incorporated | Elastic waveguide |
| US4742318 | 19. März 1987 | 3. Mai 1988 | Canadian Patents and Development Limited - Societe Canadienne Des Brevets et D'Exploitation Limitee | Birefringent single-mode acoustic fiber |
| US5241287 | 2. Dez. 1991 | 31. Aug. 1993 | National Research Council of Canada | Acoustic waveguides having a varying velocity distribution with reduced trailing echoes |
| US6046656 | 8. Jan. 1999 | 4. Apr. 2000 | Kabushiki Kaisha Toshiba | Elastic boundary wave device and method of its manufacture |
| US6938905 | 5. Nov. 2004 | 6. Sept. 2005 | | Hand truck |
| US7156201 | 4. Nov. 2004 | 2. Jan. 2007 | Advanced Ultrasonic Solutions, Inc. | Ultrasonic rod waveguide-radiator |
| US7170214 | 14. Juni 2005 | 30. Jan. 2007 | New Scale Technologies, Inc. | Mechanism comprised of ultrasonic lead screw motor |
| US7309943 | 28. Okt. 2005 | 18. Dez. 2007 | New Scale Technologies, Inc. | Mechanism comprised of ultrasonic lead screw motor |
| US7339306 | 13. Aug. 2004 | 4. März 2008 | New Scale Technologies Inc. | Mechanism comprised of ultrasonic lead screw motor |