Optics: Image Projectors Patents (Class 353)
Kaleidoscopic (Class 353/1)
Heliostats (Class 353/3)
Ascending heated air changes pictures (Class 353/4)
Mapping or aerial photograph rectifying (Class 353/5)
Stereoscopic (Class 353/7)
Relief illusion (Class 353/10)
Target, map or navigation projection (Class 353/11)
With or for vehicle (Class 353/13)
With sound accompaniment (Class 353/15)
Polarizer or interference filter (Class 353/20)
Editing or auxiliary viewing (Class 353/21)
Transparent plate (Class 353/22)
Selective data retrieval (Class 353/25)
Projected image combined with real object (Class 353/28)
Additional illumination of or near projected image (Class 353/29)
Composite projected image (Class 353/30)
Unitary plural refracting surfaces (Class 353/38)
Microprojector (Class 353/39)
Scale or scale indicator projector (Class 353/40)
Pointer (Class 353/42)
Gun, flashlight or battery operated type (Class 353/43)
Simultaneous projection and manual delineation (Class 353/44)
Image moves on screen (Class 353/46)
Temperature control (Class 353/52)
Stencil or perforated plate projector (e.g., sky or cloud projector) (Class 353/62)
Epidiascope (i.e., selective opaque and transparency projector) (Class 353/63)
Episcope (i.e., opaque projector) (Class 353/65)
Selective slide and film strip projector (Class 353/68)
Distortion compensation (Class 353/69)
Selective projection on distant or cabinet screen (Class 353/71)
Projector or screen removable from common housing (Class 353/72)
Cabinet encloses projector and one side of screen (Class 353/74)
Structurally related projector and screen (Class 353/79)
Prism in light path (Class 353/81)
Plural projection paths with single light source (Class 353/82)
Color filter (Class 353/84)
Lamp control (Class 353/85)
Shutter (Class 353/88)
Plural (Class 353/94)
Film gate (Class 353/95)
Light shield, mask, hood, or diaphragm (Class 353/97)
Reflector (Class 353/98)
Lens support (Class 353/100)
Particular condenser (Class 353/102)
Slide transfer mechanism (Class 353/103)
Housing (Class 353/119)
Picture carrier (Class 353/120)
Methods (Class 353/121)
Miscellaneous (Class 353/122)

Foreign Patent Art Collections

Class-related foreign documents (Class 353/FOR000)

Digests

Slides stacked with surface to surface contact (Class 353/DIG1)
Film strip (Class 353/DIG2)
Transparent (Class 353/DIG3)
Opaque (Class 353/DIG4)
Transparency holder accessories (Class 353/DIG5)
Head accessories (Class 353/DIG6)