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1977-06-30
SURGICAL SPONGE AND METHOD TO PRODUCE IT
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1979-10-31
PROCEDURE TO PREPARE PHENYLAMIDINOUREAS
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1979-09-14
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1977-06-20
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1977-07-05
GRID FOR AIR ORENTATION AND PROCESS TO MANUFACTURE IT
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1978-04-14
LAMINATE AND METHOD TO PRODUCE IT
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1977-06-20
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1977-02-15
CEMENT AND PROCEDURE AND DISPOSITION FOR ITS MANUFACTURE
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IMPROVEMENTS IN WALL PANELS
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1980-03-31
PROCEDURE TO BENEFIT UNSULFURATED MINERALS AND COMPOSITION TO PERFORM IT
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1976-09-14
IMPROVEMENT IN BUILDING BLOCKS AND CONSTRUCTION SEMIBLOCKS
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1975-03-31
IMPROVEMENTS IN EQUIPMENT TO REVOKE WALLS AND / OR CEILINGS
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1976-09-27
BUILDING SCORE
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1979-10-16
DESTROYED BOARD
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1979-08-10
INSULATION AND SHUTTERING PANEL
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1977-07-29
IMPROVEMENTS IN PARTICULAR POROUS ARIDES AND PROCEDURE FOR THEIR MANUFACTURE
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1981-12-21
COMPOSITION CONTAINING PYROPHOSPHATE AND SILICA
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1980-08-29
IMPROVED CLEANING-DETERGENT ARTICLE AND METHOD TO MANUFACTURE SUCH ARTICLE
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1976-10-19
PARTS AND GAME BOARD
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1979-03-07
FORM AND CORE SCIENCE
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1977-02-23
IMPROVEMENTS INTRODUCED IN BUILDING BLOCKS
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1975-05-15
EQUIPMENT FOR HEATING AND VENTILATION OF ENVIRONMENTS IN GENERAL