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Carl Zeiss AG

Carl Zeiss
Active Patents
0
Total Holdings
17

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
GB2255651A Ophthalmoscopic attachment for surgical microscopes Expired / Lapsed 1992-04-13 — 1 Details
GB812713A Method for working materials by means of a beam of charged … Expired / Lapsed 1956-06-25 — 0 Details
US5566221A Apparatus for applying a predetermined x-radiation flux to … Expired / Lapsed 1994-07-12 1996-10-15 15 Details
US5359417A Surgical microscope for conducting computer-supported stere… Expired / Lapsed 1992-10-15 1994-10-25 16 Details
US5321447A Ophthalmoscopic attachment for a surgical microscope Expired / Lapsed 1992-04-28 1994-06-14 15 Details
US5123902A Method and apparatus for performing surgery on tissue where… Expired / Lapsed 1989-09-13 1992-06-23 26 Details
US4445516A Process for the digitization and display of thermographic r… Expired / Lapsed 1981-05-26 1984-05-01 12 Details
US4427889A Method and apparatus for molecular spectroscopy, particular… Expired / Lapsed 1980-08-12 1984-01-24 15 Details
US4266862A Refractometer for the automatic objective determination of … Expired / Lapsed 1977-11-21 1981-05-12 18 Details
US3816712A Method and apparatus for detecting relative deviations in p… Expired / Lapsed 1972-11-13 1974-06-11 13 Details
US3535027A Slit lamp with pancratic illumination Expired / Lapsed 1968-07-29 1970-10-20 0 Details
US3186300A Double stereo-microscope and illuminator for surgical opera… Expired / Lapsed 1961-07-13 1965-06-01 2 Details
US3035482A Interferometers Expired / Lapsed 1959-12-04 1962-05-22 0 Details
US2968723A Means for controlling crystal structure of materials Expired / Lapsed 1957-04-11 1961-01-17 0 Details
US2902583A Method for working materials by means of a beam of charged … Expired / Lapsed 1956-06-22 1959-09-01 0 Details
US2779231A Device for determining small inclinations from the vertical… Expired / Lapsed 1950-11-09 1957-01-29 0 Details
US2771568A Utilizing electron energy for physically and chemically cha… Expired / Lapsed 1951-11-28 1956-11-20 0 Details