Patent JPS5229925A successfully refreshed from Google Patents.
US3609934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall coverings
Assignee: Individual
•
Filing: 1969-04-21
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Granted: 1971-10-05
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Expires: 1989-04-21
Abstract
Abstract THIS INVENTION COMPRISES FERROUS STRIPS LAID IN THE INNER SURFACE OF PLASTERBOARD ERECTED IN BUILDINGS, AND PANELS APPLICABLE TO THE PLASTERBOARD WITH MAGNETIC INLAYS TO HOLD THE PANELS TO THE PLASTERBOARD. THE LATTER HAS A SURFACE-COVERING SHEET TO RETAIN AND CONCEAL THE FERROUS STRIPS, AND THE PANELS ARE MAINLY SLABS OF SOUND-PROOFING MATERIAL, AND HAVE GROOVES IN THE SIDE OF APPLICATION SEATING THE MAGNETIC INLAYS. STRIPS OF THIN PLASTIC NETTING ARE SECURED ON THE APPLICABLE SIDE OF THE SLABS OVER THE GROOVES TO RETAIN THE MAGNETIC INLAYS THEREIN, AND THE SLABS CARRY WALLPAPER OR OTHER COVERING MATERIAL ON THE EXPOSED SIDE.
Inventors
- 👤 Michael P O'carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:48
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0801; E04F13/0803; E04F13/088; E04F13/0883; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10S52/00; Y10S52/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |