Patent US3087250A successfully refreshed from Google Patents.
US3087250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rule holder
Assignee: Individual
•
Filing: 1959-08-19
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Granted: 1963-04-30
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Expires: 1979-08-19
Abstract
No abstract record available.
Inventors
- 👤 Emerald R Blue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:09
CPC Classifications
B; B43; B43L; B43L7/00; B43L7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A RULE HOLDER ADAPTED TO SLIDABLY ENGAGE AND HOLD A TRIANGULAR RULE ON A DRAWING SURFACE COMPRISING AN INVERTED U-SHAPED BODY HAVING TWO LEGS AND A BIGHT PORTION, SAID LEGS POSITIONED TO ENGAGE OPPOSITE SIDES OF A TRIANGULAR RULE AND TO SUPPORT THE BIGHT PORTION SLIGHTLY ABOVE THE UPPERMOST PORTION OF THE RULE, A FINGER REST HOLDING MEMBER EXTENDING OUTWARDLY FROM SAID BODY ON THE SIDE OPPOSITE FROM THE WORKING EDGE OF THE RULE, AND A FOOT MEMBER CARRIED BY SAID FINGER REST HOLDING MEMBER ENGAGING SAID DRAWING SURFACE THEREBY ENABLING SAID HOLDER TO BE MOVED LATERALLY ALONG THE RULE AND THE DRAWING SURFACE.
Claim 2
Dependent Claim
104 words
A RULE HOLDER ADAPTED TO SLIDABLY ENGAGE AND HOLD A TRIANGULAR RULE ON A DRAWING SURFACE COMPRISING AN INVERTED U-SHAPED BODY HAVING TWO LEGS AND A BIGHT PORTION, SAID LEGS POSITIONED TO ENGAGE OPPOSITE SIDES OF A TRIANGULAR RULE AND TO SUPPORT THE BIGHT PORTION SLIGHTLY ABOVE THE UPPERMOST PORTION OF THE RULE, A FINGER REST HOLDING MEMBER EXTENDING OUTWARDLY FROM SAID BODY ON THE SIDE OPPOSITE FROM THE WORKING EDGE OF THE RULE, AND A FOOT MEMBER CARRIED BY SAID FINGER REST HOLDING MEMBER ENGAGING SAID DRAWING SURFACE THEREBY ENABLING SAID HOLDER TO BE MOVED LATERALLY ALONG THE RULE AND THE DRAWING SURFACE.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |