Method and apparatus for maintaining a predetermined separation between plates

IL39937A0Inactive Publication Date: 1972-09-28RESEARCH FRONTIERS INC
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Patent Information

Application Number
IL39937
Authority / Receiving Office
IL · IL
Patent Type
Applications
Current Assignee / Owner
Priority Date
1971-07-26
Filing Date
1972-07-18
Publication Date
1972-09-28
Estimated Expiration
Not applicable · inactive patent
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