US3242580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tread and riser gauge
Assignee: Individual
•
Filing: 1963-05-21
•
Granted: 1966-03-29
•
Expires: 1983-05-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:28
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A STAIRWAY TREAD AND RISER GUAGE FOR USE WITH A HAND HELD POWER SAW OF THE TYPE INCLUDING A CUTTING BLADE PROJECTING BENEATH A SLIDE SHOE, SAID SLIDE SHOE HAVING A GUIDE EDGE EXTENDING PARALLEL TO THE BLADE, SAID GUAGE COMPRISING: AN ELONGATED BODY HAVING OPPOSITE END PORTIONS, SAID END PORTIONS RESPECTIVELY HAVING MEANS FORMING OPPOSITE OUTWARDLY OPEN SLOTS, A PAIR OF GUIDE MEMBERS RESPECTIVELY EXTENDING TRANSVERSELY OF SAID BODY AND RESPECTIVELY HAVING AN INNER PORTION THEREOF SLIDABLY RECEIVED IN SAID RESPECTIVE SLOTS, SAID GUIDE MEMBERS INCLUDING AN OUTER PORTION SPACED OPPOSITELY OUTWARDLY OF SAID RESPECTIVE SLOTS AND FORMING A GUIDING EDGE FOR SLIDABLY CONTACTING SAID SLIDE SHOE EDGE, A PAIR OF PLANAR WING
Claim 2
Dependent Claim
114 words
A STAIRWAY TREAD AND RISER GUAGE FOR USE WITH A HAND HELD POWER SAW OF THE TYPE INCLUDING A CUTTING BLADE PROJECTING BENEATH A SLIDE SHOE, SAID SLIDE SHOE HAVING A GUIDE EDGE EXTENDING PARALLEL TO THE BLADE, SAID GUAGE COMPRISING: AN ELONGATED BODY HAVING OPPOSITE END PORTIONS, SAID END PORTIONS RESPECTIVELY HAVING MEANS FORMING OPPOSITE OUTWARDLY OPEN SLOTS, A PAIR OF GUIDE MEMBERS RESPECTIVELY EXTENDING TRANSVERSELY OF SAID BODY AND RESPECTIVELY HAVING AN INNER PORTION THEREOF SLIDABLY RECEIVED IN SAID RESPECTIVE SLOTS, SAID GUIDE MEMBERS INCLUDING AN OUTER PORTION SPACED OPPOSITELY OUTWARDLY OF SAID RESPECTIVE SLOTS AND FORMING A GUIDING EDGE FOR SLIDABLY CONTACTING SAID SLIDE SHOE EDGE, A PAIR OF PLANAR WING
References Cited (Backward Citations)
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Cited
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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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |