Donald A. Long

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Burbank, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Identification device with versatile imprinting means
- Patent number 4,386,795
- Issue date Jun 7, 1983
- Precision Dynamics Corporation
- Stanley E. Charles
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Identification device with versatile imprinting means
- Patent number 4,318,234
- Issue date Mar 9, 1982
- Precision Dynamics Corporation
- Stanley E. Charles
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Tamper-resistant identification device
- Patent number 4,285,146
- Issue date Aug 25, 1981
- Precision Dynamics Corporation
- Stanley E. Charles
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Tamper-resistant identification device
- Patent number 4,221,063
- Issue date Sep 9, 1980
- Precision Dynamics Corporation
- Stanley E. Charles
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS