Our patents

The patent pages linked below are supported by the U.S. Patent & Trademark Office and/or other Patent Search service or services with which V.L. Engineering, Inc., has no affiliation.

  1. 6,234,395   Instant portable bar code reader
  2. 6,158,661   Instant portable bar code reader
  3. 5,992,751   Portable data file readers
  4. 5,992,750   Instant portable bar code reader
  5. 5,811,828   Portable reader system having an adjustable optical focusing means for reading optical information over a substantial range of distances
  6. 5,773,808   Method and apparatus for reading invisible messages
  7. 5,591,955   Portable data file readers
  8. 5,288,985   Instant portable bar code reader
  9. 5,258,606   Instant portable bar code reader
  10. 5,233,172   Instant portable bar code reader
  11. 5,218,191   Instant portable bar code reader
  12. 5,187,356   Instant portable bar code reader
  13. 5,187,355   Instant portable bar code reader
  14. 5,182,441   Instant portable bar code reader
  15. 5,144,121   Instant portable bar code reader
  16. 5,144,119   Instant portable bar code reader
  17. 5,095,197   Instant portable bar code reader
  18. 5,081,343   Instant portable bar code reader
  19. 5,038,024   Instant portable bar code reader
  20. 5,021,642   Instant portable bar code reader
  21. 4,894,523   Instant portable bar code reader
  22. 4,766,300   Instant portable bar code reader
  23. 4,570,057   Instant portable bar code reader
  24. 4,500,776   Method and apparatus for remotely reading and decoding bar codes
  25. 4,282,425   Instant portable bar code reader

Other U.S. and international patents are pending or applied for.