George Calvin Turner

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Springfield, VA, US

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Patents Applicationslast 30 patents

Information Patent Application
Measures to enhance the security and safety of mail within the post...
- Publication number 20030145192
- Publication date Jul 31, 2003
- George Calvin Turner
- G07 - CHECKING-DEVICES
Information Patent Application
Identity postage stamp
- Publication number 20030136826
- Publication date Jul 24, 2003
- George Calvin Turner
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Encrypted mail envelope-identitiy
- Publication number 20030116959
- Publication date Jun 26, 2003
- George Calvin Turner
- G07 - CHECKING-DEVICES