This is awesome and all-encompassing, but has anyone filtered out the "key" patents and made a list?
These lists seem more about completism than showing the progress of patented developments toward the
current state of the art. Just off the top of my head, I'd like to know the key developments, not
dead ends for:
--Bell Labs/Western Electric
--German patents on magnetic tape and tape recording?
--Ampex patents on video tape recording (this will be significant when digital comes along since all
early digital systems except Soundstream used video tape as the storage medium)
--I believe there is an American patent on an optical PCM system, which Philips/Sony ended up
licensing. The man spoke at the PNW AES section a few years ago
--Also home reproduction patents like by Hafler and Klipsch
--I think there were some loudpseaker patents granted MGM and Lansing folks, but their work might
proceed from Bell Labs and/or RCA patents
Bottom line, I think it would be really neat to see a timeline of used/usable audio developments
with matching patents where applicable.
-- Tom Fine
----- Original Message -----
From: "Patrick Feaster" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, October 10, 2012 8:40 AM
Subject: Re: [ARSCLIST] Key patent numbers
> Allen Koenigsberg's book is a terrific resource, but it covers the period
> up to 1912, not 1922. His 1990 edition lists 2,118 patents and is more
> common, while the 1991 "bicentennial" edition lists 2,144 patents. For the
> period 1913-1919, my own online "Directory of U. S. Phonograph Patents"
> might be of interest (http://www.phonozoic.net/patents/index.html). It
> lists 2,211 patents for those years. I've also posted an index by current
> classification spanning the whole period 1878-1919 (I assembled my own list
> of 2,254 patents for 1878-1912 using the same search method I used for
> 1913-1919 but, except for the current classification index, I haven't made
> it a priority to publish that material because so much of what I found is
> already in Allen's book). I'm not aware of anything similar for 1920
> onward, though.
> - Patrick
> On Wed, Oct 10, 2012 at 2:48 AM, Michael Biel <[log in to unmask]> wrote:
>> Allen Konigsberg long ago published a book "The Patent History of the
>> Phonograph 1877-1922". The work has been done thru 1922 at least. As I
>> typed this, I realized that I do not have a copy of it, so BEFORE
>> sending this out I checked Amazon -- I immediately got the $25.00 copy,
>> leaving the $150.00 and $500.04 copies. I don't see it in Nauck's.
>> Unless Allen has some copies left -- there were only 1000 -- it now is
>> an expensive book. But the field is wide open to update the material
>> beyond 1922.
>> Mike Biel [log in to unmask]
>> -------- Original Message --------
>> Subject: Re: [ARSCLIST] Key patent numbers
>> From: Paul Stamler <[log in to unmask]>
>> Date: Tue, October 09, 2012 5:02 pm
>> To: [log in to unmask]
>> On 10/9/2012 3:40 PM, Tom Fine wrote:
>> > This got me thinking, what are the key audio patents, has anyone ever
>> > done a compendium or listing? If not, that would make a great ARSCJ
>> > article! You could use as a model Kellogg's excellent summary of
>> > sound-for-picture developments:
>> Several years ago, for a course I was teaching, I compiled a folder of
>> audio patents. Not everything, but some things that were important for
>> the class to see. I have to run off to class now, but I'll post a list