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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: B&W's patent on kevlar drivers recently expired... posted by layman on September 25, 2002 at 21:42:24:
is US 6,219,432, issued on 2001 04 17, thus still valid.The Nautilus tweeter is US 6,377,696,issued on 2002 04 23.
The old Matrix design is US 4,690,244,issued on 1987 09 01.
The reflex port design is US 6,019,188, issued on 2000 02 01.
The Nautilus speaker itself is GB 2,290,672, issued on 1996 01 03.
Klaus
US patents can be viewed athttp://patft.uspto.gov/netahtml/srchnum.htm
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Follow Ups
- Re: B&W's patent on kevlar drivers... - Klaus 03:52:44 09/26/02 (4)
- Re: B&W's patent on kevlar drivers... - layman 11:34:35 09/26/02 (3)
- Re: B&W's patent on kevlar drivers... - Klaus 02:16:42 09/27/02 (0)
- Patents relate to country sold in - chuckd55 22:43:24 09/26/02 (0)
- Wow - RGA 18:31:33 09/26/02 (0)
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