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Archive | 1983

LENTILLE SIMPLE PRESENTANT UNE SURFACE REFRINGENTE SPHERIQUE ET UNE SURFACE REFRINGENTE ASPHERIQUE

Braat Josephus Johannes Maria; Haisma Jan; Prast Gijsbert


Archive | 1968

METHOD AND DEVICE FOR PRODUCING COLD AND LIQUEFYING GASES

Born Jacobus Abraham Van Den; Haisma Jan; Kroon Ferdinand Jehan Maria


Archive | 1995

MANUFACTURE OF THIN-FILM MAGNETIC HEAD AND THIN-FILM MAGNETIC HEAD MANUFACTURED BY USING SUCH METHOD

Postma Lambertus; Maas Henricus Godefridus R; Haisma Jan; Ruigrok Jacobus Josephus Maria; Somers Gerardus Henricus Johan


Archive | 1984

OBJECTIVE COMPRISING ASPHERICAL SURFACES WHOSE FOCAL LENGTH IS VARIABLE

Hugues Edgard Alfred; Bacchus Jean-Marie; Haisma Jan


Archive | 1982

Mono aspherical lens

Haisma Jan; Braat Josephus Johannes Maria; Prast Gijsbert


Archive | 1982

EINZELLINSE MIT EINER SPHAERISCH UND EINER ASPHAERISCH BRECHENDEN OBERFLAECHE

Braat Josephus Johannes Maria; Prast Gijsbert; Haisma Jan


Archive | 1980

VERFAHREN UND VORRICHTUNG ZUR SPANGEBENDEN BEARBEITUNG VON GLAS UND GLASARTIGEN WERKSTOFFEN SOWIE NACH DIESEM VERFAHREN BEARBEITETES WERKSTUECK AUS GLAS ODER GLASARTIGEM WERKSTOFF

Teunissen Johannes Caspar Gera; Haisma Jan; Brehm Rudolf; Veldkamp Johannes Caspar Benja


Archive | 2000

PROCEDIMIENTO DE FABRICACION DE UN CABEZAL MAGNETICO DE PELICULA DELGADA Y CABEZAL FABRICADO POR DICHO PROCEDIMIENTO.

Postma Lambertus; Haisma Jan; Ruigrok Jacobus Josephus Maria; Somers Gerardus Henricus Johan


Archive | 2000

METHOD OF POLISHING A SURFACE OF COPPER OR AN ALLOY COMPRISING MAINLY COPPER, MAGNETIC HEAD, X-RAY RADIATION-COLLIMATING ELEMENT OBTAINABLE BY MEANS OF THE METHOD, AND POLISHING AGENT

Deboer Dirk Kornelis Gerhardus; Dehaas Peter Wilhelmus; Haisma Jan; Van Denhoogenhof Waltherus Wil; Postma Lambertus


Archive | 2000

Herstellungsverfahren eines Dünnfilmmagnetkopfes und danach hergestellter Magnetkopf

Postma Lambertus; Haisma Jan; Ruigrok Jacobus Josephus Maria; Somers Gerardus Henricus Johan

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