Applied optics patents.
3,841,733; 3,973,827; 4,052,119; 3,977,789; 3,980,811; 3,987,421; 4,023,906; 4,039,245; 4,025,194; 4,025,195; 4,037,918; 4,025,786; 4,037,919; 4,039,833; 4,042,822; 4,046,456; 4,048,515; 4,049,963; 4,053,919; 4,054,358; 4,057,317; 4,058,734; 4,058,722; 4,059,343; 4,060,311; 4,060,327; 4,062,045;