AU2538630A - Improvements in or relating to carbonmicrophones - Google Patents

Improvements in or relating to carbonmicrophones

Info

Publication number
AU2538630A
AU2538630A AU25386/30A AU2538630A AU2538630A AU 2538630 A AU2538630 A AU 2538630A AU 25386/30 A AU25386/30 A AU 25386/30A AU 2538630 A AU2538630 A AU 2538630A AU 2538630 A AU2538630 A AU 2538630A
Authority
AU
Australia
Prior art keywords
carbonmicrophones
relating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
AU25386/30A
Inventor
Vermeulen Roelof
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Publication date
Publication of AU2538630A publication Critical patent/AU2538630A/en
Expired legal-status Critical Current

Links

AU25386/30A Improvements in or relating to carbonmicrophones Expired AU2538630A (en)

Publications (1)

Publication Number Publication Date
AU2538630A true AU2538630A (en) 1930-03-03

Family

ID=

Similar Documents

Publication Publication Date Title
AU71331A (en) Improvements in or relating to trusses
AU2538630A (en) Improvements in or relating to carbonmicrophones
AU2766930A (en) Improvements in or relating to airconditioning apparatus
AU2807830A (en) Improvements in or relating to wave-signalling systems
AU2481430A (en) Improvements in or relating to aircraft
AU2782730A (en) Improvements in or relating to molds
AU2599530A (en) Improvements in or relating to transformers
AU2599630A (en) Improvements in or relating to transformers
AU2468630A (en) Improvements in or relating to furniture
AU2666130A (en) Improvements in or relating to hosiery
AU2871530A (en) Improvements in or relating to adhesives
AU2983630A (en) Improvements in or relating to switchblades
AU2438029A (en) Improvements in or relating to resistances
AU2649230A (en) Improvements in or relating to trusses
AU2200729A (en) Improvements in or relating to screw-propelled ships
AU2484630A (en) Improvements in or relating to vulcanizers
AU2153529A (en) Improvements in or relating to electric glowlamps
AU2596830A (en) Improvements in or relating to electric cablesystems
AU2755330A (en) Improvements in or relating to doors
AU2817430A (en) Improvements in or relating to fans
AU2014129A (en) Improvements in or relating to driers
AU2661630A (en) Improvements in and relating to water -eaters
AU1786929A (en) Improvements in and relating to liquid-meters
AU2572030A (en) Improvements in or relating to electro-mecfianical resonators andthe like
AU2642130A (en) Improvements in seatcovers