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MULTIFOCAL LASER SCANNING BAR CODE SYMBOL READING SYSTEM EMPLOYING A VARIABLE SECOND DERIVATIVE SIGNAL PASS-BAND FILTER STRUCTURE HAVING FREQUENCY CHARACTERISTICS THAT ARE CONTROLLED IN A REAL-TIME MANNER BY DETECTING BAR CODE ELEMENTS IN ANALOG SCAN DATA SIGNALS P

09/499,530 | U.S. Patent Application

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Location FILE REPOSITORY (FRANCONIA)
Filed Feb. 10, 2000
Examiner AHSHIK KIM
Class 235
Art Group 2876
Patent No. 6,540,139
Case Type Utility - 235/462010
Status Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362
Parent 09/241,930 Patented
Parent 09/157,778 Patented
Parent 09/47,146 Patented
Parent 08/949,915 Patented
Parent 08/854,832 Patented
Parent 08/886,806 Patented
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Last Updated: 4 years, 9 months ago
Date # Transaction