LandOfFree - US Patents - Listing for Education and demonstration,Science,Astronomy

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Multiple projector planetarium drive system

Education and demonstration – Science – Astronomy

Patent

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Orrery

Education and demonstration – Science – Astronomy

Patent

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Orrery

Education and demonstration – Science – Astronomy

Reexamination Certificate

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Planet projection

Education and demonstration – Science – Astronomy

Patent

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Planetarium

Education and demonstration – Science – Astronomy

Patent

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Planetarium

Education and demonstration – Science – Astronomy

Patent

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Planetarium

Education and demonstration – Science – Astronomy

Reexamination Certificate

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Planetarium

Education and demonstration – Science – Astronomy

Patent

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Planetarium

Education and demonstration – Science – Astronomy

Patent

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Planetarium and projection apparatus for same

Education and demonstration – Science – Astronomy

Patent

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Planetarium having an auxiliary projector independently rotatabl

Education and demonstration – Science – Astronomy

Patent

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Planetary teaching age

Education and demonstration – Science – Astronomy

Reexamination Certificate

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Portable planetarium

Education and demonstration – Science – Astronomy

Patent

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Projection apparatus for planetariums

Education and demonstration – Science – Astronomy

Patent

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Solar system simulator

Education and demonstration – Science – Astronomy

Patent

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Solar system teaching aid

Education and demonstration – Science – Astronomy

Reexamination Certificate

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Spherical star chart with indicator

Education and demonstration – Science – Astronomy

Patent

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Star projection device

Education and demonstration – Science – Astronomy

Patent

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Star projectors for planetaria

Education and demonstration – Science – Astronomy

Patent

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Tutorial device for observing lunar phase

Education and demonstration – Science – Astronomy

Patent

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