US3287867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stair nosing
Assignee: Individual
•
Filing: 1964-01-03
•
Granted: 1966-11-29
•
Expires: 1984-01-03
Abstract
No abstract record available.
Inventors
- 👤 Loyd P Aton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:41
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/02; E04F11/104; E04F11/16; E04F11/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN COMBINATION, A STAIR STEP COMPRISING A VERTICAL RISER, A TREAD AT FIRST ANGLES THERETO AND HAVING A LEADING EDGE PORTION RESTING ATOP AND UPPER EDGE OF THE RISER, SAID LEADING EDGE PORTION BEING PROVIDED WITH A HORIZONTAL GROOVE CONSTITUTING A KEYWAY, COVERING TILE FIXED ATOP SAID TREAD, NOSING COMPRISING A STRIP OF MOLDING, SAID MOLDING EXTENDING ALONG SAID LEADING EDGE PORTION AND BEING CONCAVO-CONVEX AND HAVING ITS CONCAVE SIDE OVERLYING THE LEADING EDGE PORTION OF THE TREAD AND UPPER EDGE PORTION OF THE RISER AND HAVING AN UPPER HORIZONTAL LENGTHWISE EDGE FLUSH WITH THE TOP OF THE FILE, THE EDGE
Claim 2
Dependent Claim
101 words
IN COMBINATION, A STAIR STEP COMPRISING A VERTICAL RISER, A TREAD AT FIRST ANGLES THERETO AND HAVING A LEADING EDGE PORTION RESTING ATOP AND UPPER EDGE OF THE RISER, SAID LEADING EDGE PORTION BEING PROVIDED WITH A HORIZONTAL GROOVE CONSTITUTING A KEYWAY, COVERING TILE FIXED ATOP SAID TREAD, NOSING COMPRISING A STRIP OF MOLDING, SAID MOLDING EXTENDING ALONG SAID LEADING EDGE PORTION AND BEING CONCAVO-CONVEX AND HAVING ITS CONCAVE SIDE OVERLYING THE LEADING EDGE PORTION OF THE TREAD AND UPPER EDGE PORTION OF THE RISER AND HAVING AN UPPER HORIZONTAL LENGTHWISE EDGE FLUSH WITH THE TOP OF THE FILE, THE EDGE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |