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.