Mimo MimoMeter date watch - 1930 or 32?

Discussion in 'Wrist Watches' started by Jet Jetski, Aug 29, 2020.

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  1. Jet Jetski

    Jet Jetski Registered User
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    Oct 5, 2019
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    Hello, I have been advised the MimoMeter date window watch was released in 1930, but I have a fairly good authority here that it was '32, grateful for any help - I have a priority date for a Vertex date window watch of 31 Jan 30 - don't see how they could beat that! Here is the download link to my source for '32.

    http://hans-weil.faszination-uhrwerk.de/girard-perregaux_mimo.pdf

    Thanks for any assistance - was looking for a link to a Bruce Shawkey article Finding Mimo without any luck, too.

    Stay Safe

    Jon
     
  2. Tomxhar

    Tomxhar Registered User

    Sep 2, 2019
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  3. Jet Jetski

    Jet Jetski Registered User
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    Oct 5, 2019
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    Thanks - I found a reference to the article elsewhere that gave me the year and issue (April 2011) so then I was able to get it through the library, but I really appreciate your help.

    Here is my Banner date watch - date I was given was 1935,
    73755672576_o.jpg?_nc_cat=103&_nc_sid=cdbe9c&_nc_ohc=pTKz7uEV0gEAX92_CsU&_nc_ht=scontent.flhr4-2.jpg

    there is info about the AS 806 movement here: bidfun-db Archive: Watch Movements: AS 806

    Different bridge layouts for this family of movements here: bidfun-db Archive: Watch Movements: AS 340

    No date for the 806 though - pity I cannot find a British hallmarked version ...

    Thanks again,

    Jon
     
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  4. Tomxhar

    Tomxhar Registered User

    Sep 2, 2019
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    Here are some images for 1932 Bulova date watches I thought you might like.

    1932-Calendar-proto-type.jpg 1932-Calendar-proto-type.jpg 1932-Calendar-proto-type-1.jpg 1932-Calendar-proto-type-3.jpg calbul61412.jpg
     
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  5. Jet Jetski

    Jet Jetski Registered User
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    Oct 5, 2019
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    Thanks, this really is modern style design. I am wondering how they dealt with the patent - what I have noticed is that several patent applications were not followed up in one territory or another, while Mimo and Vertex both submitted ostensibly the same drawing with the same priority date (31 Jan 1930) for separate applications - I wonder if the 'real' inventor (Graef?) sold the rights to different makers in different territories ( Lyons, Bulova?) What is interesting is that it says the Graef patent was registered 15 August 1931 and the patent protection I believe lasted 14 years, when funnily enough the Datejust came out, in 1945.

    Vertex (C Lyons) application (note the convention date): Espacenet - Original document

    Mimo (Graef) application: Espacenet - Original document

    Jon
     
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