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US3570846A Expired / Lapsed US ⏱️ 0.0 years remaining

Surfacing means for snowless ski slopes and method of producing the same

Assignee: Individual
•
Filing: 1968-08-21
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Granted: 1971-03-16
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Expires: 1988-08-21
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Abstract

Abstract SURFACING MEANS FOR SNOWLESS SKI SLOPES AND THE LIKE COMPRISING A FLEXIBLE SUPPORT MEMBER IN SHEET FORM HAVING PROTRUDING FROM ONE UPPER SURFACE THEREOF A PLURALITY OF SPACED AND ESSENTIALLY PERPENDICULAR FLEXIBLE RODS FORMING AN OPEN BRUSH-LIKE SURFACE, A BED OF RANDOM SHAPED, GENERALLY ELONGATED, FLEXIBLE PLASTIC PARTICLES SUBSTANTIALLY FILLING THE SPACES BETWEEN SAID RODS WITH PORTIONS OF SAID PARTICLES EXTENDING ABOVE SAID RODS, SAID RODS AND PARTICLES BEING SUBSTANTIALLY FREE OF SHARP EDGES, AND MEANS ON SAID RODS INTERFITTING WITH SAID BED OF PARTICLES RESTRICTING INADVERTENT DISPLACEMENT OF SAID PARTICLES. NOVELTY IS CONSIDERED TO RESIDE BOTH IN THE COMBINATION AND IN THE FLEXIBLE SUPPORT MEMBER AND ARTIFICIAL SNOW CONSISTING OF SUCH PLASTIC PARTICLES AS SEPARATE ARTICLES OF COMMERCE.

Inventors

  • 👤 Arthur P Weber
  • 👤 David I Marshall

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 09:41
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/10; E01C13/12; Y; Y10; Y10S; Y10S273/00; Y10S273/04; Y10S273/12

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-03-15 1974-09-14 1975-03-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-03-15 1978-09-14 1979-03-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-03-15 1982-09-14 1983-03-16 $7700.00 Window Closed / Lapsed

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