Mystery-drive mechanical or electromechanical timepiece
US-11454935-B2 · Sep 27, 2022 · US
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Time pieces with invisible drive, e.g. with hands attached to a rotating glass disc {(for advertising G09F23/00; disc-shaped hands with marks or notches G04B19/046)}
Time pieces with invisible drive, e.g. with hands attached to a rotating glass disc {(for advertising G09F23/00; disc-shaped hands with marks or notches G04B19/046)} · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G04B45/04 |
| Official title | Time pieces with invisible drive, e.g. with hands attached to a rotating glass disc {(for advertising G09F23/00; disc-shaped hands with marks or notches G04B19/046)} |
| Display label | Time pieces with invisible drive, e.g. with hands attached to a rotating glass disc {(for advertising G09F23/00; disc-shaped hands with marks or notches G04B19/046)} |
| Total patents | 6 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 2 |
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Mystery-drive mechanical or electromechanical timepiece
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