← Back to Patent Explorer
US3924879A Expired / Lapsed US ⏱️ 0.0 years remaining

Flexible film transparency display makers

Assignee: NEWBURG ACQUISITION Inc
•
Filing: 1974-03-28
•
Granted: 1975-12-09
•
Expires: 1994-03-28
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Film transparency displays to be viewed by projecting light through them as mounted on light reflecting surfaces, windows, light boxes, overhead projectors and slide projectors are made by imprinting an image on a soft flexible transparent film with at least one glossy surface. Such flexible film transparencies adhere without adhesives or other aids to smooth, hard, glossy surfaces such as glass, acrylics, and other plastics. The flexible film transparencies are stored on indexed light reflecting pages having smooth hard glossy surfaces which may be bound in books. Slides are made by adhering flexible film transparencies to acrylic plates, and photographic films may be adhered to the flexible film transparencies.

Inventors

  • 👤 John S Wright

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 04:14
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/132; B; B42; B42F; B42F5/00; B44; B44C; B44C1/00; B44C1/16

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 132 words
A product for making and storing transparency displays comprising the combination of a carrier sheet of a transparent material having a glossy surface; a backing sheet of opaque material bound to said carrier along one edge and adjacent a surface of said carrier sheet opposite said glossy surface; a pluraity of transparency films, having a glossy surface and being trasparent, soft and flexible, and being removably adherent to said glossy surface of said carrier sheet without adhesive, solvent or fusion by pressing said glossy surface of said transparency films against said glossy surface of said carrier sheet, said transparency films being adapted for receiving imprinted images; and a duplicating medium between said carrier sheet and said backing sheet to transfer to said backing sheet duplications of images imprinted on said transparency films.
Claim 2
Dependent Claim 132 words
A product for making and storing transparency displays comprising the combination of a carrier sheet of a transparent material having a glossy surface; a backing sheet of opaque material bound to said carrier along one edge and adjacent a surface of said carrier sheet opposite said glossy surface; a pluraity of transparency films, having a glossy surface and being trasparent, soft and flexible, and being removably adherent to said glossy surface of said carrier sheet without adhesive, solvent or fusion by pressing said glossy surface of said transparency films against said glossy surface of said carrier sheet, said transparency films being adapted for receiving imprinted images; and a duplicating medium between said carrier sheet and said backing sheet to transfer to said backing sheet duplications of images imprinted on said transparency films.

References Cited (Backward Citations)

US2585924A Cited
US2588572A Cited
US2648924A Cited
US3383121A Cited
US3608219A Cited
US3827164A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-12-08 1979-06-09 1979-12-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-12-08 1983-06-09 1983-12-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-12-08 1987-06-09 1987-12-09 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag