Patent US3344531A successfully refreshed from Google Patents.
US3344531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring instrument
Assignee: Individual
•
Filing: 1966-01-19
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Granted: 1967-10-03
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Expires: 1986-01-19
Abstract
No abstract record available.
Inventors
- 👤 Emerson Alfred Adolphe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:17
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01C9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A COMBINATION LEVEL AND ANGLE FINDING AND MEASURING UNIT COMPRISING A CYLINDRICAL CASING HAVING FRONT AND BACK PANELS, AT LEAST THE FRONT PANEL OF WHICH IS TRANSPARENT, A PLUMB NEEDLE HAVING ONE END HEAVIER THAN THE OTHER, PIVOTALLY MOUNTED IN THE CASING FOR ROTATION IN A PLANE SUBSTANTIALLY PARALLEL WITH THE PLANE OF THE FRONT PANEL, A PROTRACTOR SCALE PROVIDED WITHIN THE CASING, SAID CASING BEING CARRIED BY A BASE MEMBER AND BEING ROTATABLE WITH RESPECT THERETO, MEANS CARRIED BY THE BASE MEMBER TO SECURE THE BASE AND CASING AGAINST RESPECTIVE ROTATIONAL MOVEMENT, THE BASE MEMBER BEING ELONGATED AND FLAT ON ITS LOWERMOST SURFACE AND PROVIDED WITH UPSTANDING FRONT AND BACK WALL MEMBERS THROUGHOUT ITS LENGTH, THE CENTRAL PORTION OF THE TOP OF EACH WALL MEMBER BEING IN THE SHAPE OF A CIRCULAR ARC TO RECEIVE THE CIRCULAR CASING, THE HEIGHT OF THE CIRCULAR ARC PROVIDED IN THE BACK WALL BEING GREATER THAN THE HEIGHT OF THE ARC IN THE FRONT WALL, AND THE BACK WALL BEING PROVIDED WITH AN INWARDLY PROJECTING FLANGE TO ENGAGE A CIRCULAR GROOVE PROVIDED AROUND THE REAR PERIPHERY OF THE CYLINDRICAL CASING.
Claim 2
Dependent Claim
187 words
A COMBINATION LEVEL AND ANGLE FINDING AND MEASURING UNIT COMPRISING A CYLINDRICAL CASING HAVING FRONT AND BACK PANELS, AT LEAST THE FRONT PANEL OF WHICH IS TRANSPARENT, A PLUMB NEEDLE HAVING ONE END HEAVIER THAN THE OTHER, PIVOTALLY MOUNTED IN THE CASING FOR ROTATION IN A PLANE SUBSTANTIALLY PARALLEL WITH THE PLANE OF THE FRONT PANEL, A PROTRACTOR SCALE PROVIDED WITHIN THE CASING, SAID CASING BEING CARRIED BY A BASE MEMBER AND BEING ROTATABLE WITH RESPECT THERETO, MEANS CARRIED BY THE BASE MEMBER TO SECURE THE BASE AND CASING AGAINST RESPECTIVE ROTATIONAL MOVEMENT, THE BASE MEMBER BEING ELONGATED AND FLAT ON ITS LOWERMOST SURFACE AND PROVIDED WITH UPSTANDING FRONT AND BACK WALL MEMBERS THROUGHOUT ITS LENGTH, THE CENTRAL PORTION OF THE TOP OF EACH WALL MEMBER BEING IN THE SHAPE OF A CIRCULAR ARC TO RECEIVE THE CIRCULAR CASING, THE HEIGHT OF THE CIRCULAR ARC PROVIDED IN THE BACK WALL BEING GREATER THAN THE HEIGHT OF THE ARC IN THE FRONT WALL, AND THE BACK WALL BEING PROVIDED WITH AN INWARDLY PROJECTING FLANGE TO ENGAGE A CIRCULAR GROOVE PROVIDED AROUND THE REAR PERIPHERY OF THE CYLINDRICAL CASING.
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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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |