Magnification device for timepiece

Details Magnification device for timepiece Magnification device for timepiece

2007-09-25

2007-09-25

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

With viewed object or viewed field illumination

C968S372000, C073S001430

Reexamination Certificate

active

11246526

ABSTRACT:
The device consists in compensating for the distortion of the characters marked on the dial caused by a lens, by writing the characters with a reverse pin cushion or barrel distortion.

REFERENCES:
patent: 3939646 (1976-02-01), Uchiyama
patent: 4462697 (1984-07-01), Thompson
patent: 5440428 (1995-08-01), Hegg et al.
patent: 6406769 (2002-06-01), Delabre
patent: 6642977 (2003-11-01), Kotchick et al.
patent: 2003/0189760 (2003-10-01), Miks et al.
patent: 0 814 388 (1997-12-01), None
patent: 61205889 (1986-09-01), None
patent: 62014083 (1987-01-01), None

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