[time-nuts] Re>:HP K34-59991A, [time & frequency patents]

[Bill Powell]

Hi Tom,
Yes, I'd be very interested in seeing the collection of patents on time 
and frequency that you've cataloged.

Regards,
Bill Powell


-------- Original Message --------
Subject: Re: [time-nuts] HP K34-59991A, patents
Date: Wed, 02 Feb 2005 14:56:12 -0500
From: Bruce Rahn <brahn at woh.rr.com>
Reply-To: brahn at woh.rr.com,	Discussion of precise time and frequency 
measurement <time-nuts at febo.com>
To: Tom Van Baak <tvb at leapsecond.com>,	Discussion of precise time and 
frequency measurement <time-nuts at febo.com>
References: <KIEAICHOCEMPOOFCPHCOGECNCOAA.daun at yeagley.net> 
<001d01c50949$ce7ba740$9527f304 at computer>

Tom Van Baak wrote:

>Patents are easy to look up and in some cases they
>contain a lot more detail than marketing literature or
>even op/svc manuals. I've archived a hundred of time
>& frequency related patents over the years.
>
>Here's the one for the K34-59991A:
>http://www.leapsecond.com/patent/US4282482.pdf
>
>A nice one on the internals of a cesium tube:
>http://www.leapsecond.com/patent/US3967115.pdf
>
>And the FTS cesium peak auto-lock algorithm patent:
>http://www.leapsecond.com/patent/US4499433.pdf
>
>I'll upload the whole collection if there's interest.
>
>/tvb
>
>----- Original Message -----
>From: "Daun Yeagley" <daun at yeagley.net>
>To: "Tom Van Baak" <tvb at leapsecond.com>; "Discussion of precise time and
>frequency measurement" <time-nuts at febo.com>
>Sent: Wednesday, February 02, 2005 06:38
>Subject: RE: [time-nuts] HP K34-59991A
>
>
>  
>
>>Tom, why doesn't it surprise me that you would know the patent number!
>>
>>Daun Yeagley
>>
>>-----Original Message-----
>>From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
>>Behalf Of Tom Van Baak
>>Sent: Wednesday, February 02, 2005 6:47 AM
>>To: Discussion of precise time and frequency measurement
>>Subject: Re: [time-nuts] HP K34-59991A
>>
>>
>>    
>>
>>>The manager who hired me at HP in 1979, Mike Fischer, invented the
>>>circuit in that phase comparator.  You can read his patent if
>>>you are interested in the theory of it.  (No, I don't have the
>>>patent #).
>>>
>>>Rick Karlquist
>>>      
>>>
>>4,282,482
>>    
>>
>
>
>
>
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>time-nuts mailing list
>time-nuts at febo.com
>https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>
>  
>
Tom,

I would love to see more of these!

Regards -- Bruce

-- 
Bruce Rahn

Wisdom has two parts:
1.  having a lot to say; and
2.  not saying it!


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