Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US05/634,147 Inventor Juris Upatnieks Current Assignee (The listed assignees may be inaccurate.
Google Patents US4057317A - Hologram projectorĭownload PDF Info Publication number US4057317A US4057317A US05/634,147 US63414775A US4057317A US 4057317 A US4057317 A US 4057317A US 63414775 A US63414775 A US 63414775A US 4057317 A US4057317 A US 4057317A Authority US United States Prior art keywords hologram projector section light beam lens Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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