Patent US3311990A successfully refreshed from Google Patents.
US3311990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Edward j. brenner
Assignee: —
•
Filing: —
•
Granted: 1967-04-04
•
Expires: 1984-04-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:14
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01C9/26; G01C9/28; G01C9/32; G01C9/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A LEVEL COMPRISING A FRAME HAVING A WORKING SURFACE, THE FRAME BEING PROVIDED WITH AN OPENING FOR RECEIPT OF A LEVEL VIAL, MEANS ON THE FRAME BORDERING THE OPENING AND DISPOSED IN A PREDETERMINED FIXED ANGULAR RELATIONSHIP WITH THE WORKING SURFACE FOR ENGAGING AND RETAINING THE LEVEL VIAL AND FOR POSITIONING THE VIAL AT A PREDETERMINED ANGLE WITH RESPECT TO THE WORKING SURFACE OF THE FRAME WITHOUT FURTHER ANGULAR ADJUSTMENT WITH RESPECT TO THE WORKING SURFACE, AND A LEVEL VIAL HAVING A SYMMETRICAL GENERALLY BARREL SHAPED BORE DISPOSED IN CONCENTRIC RELATION WITH THE LONGITUDINAL AXIS OF THE VIAL, THE OUTER SURFACE OF THE VIAL BEING IN A PREDETERMINED REGISTRY WITH RESPECT TO THE LONGITUDINAL AXIS OF THE VIAL, THE OUTER SURFACE OF THE VIAL BEING POSITIONED IN CLOSEFITTING ENGAGEMENT WITH THE ENGAGING AND RETAINING MEANS ON THE FRAME BORDERING THE OPENING PROVIDED THEREIN TO PRODUCE A VIAL INSTALLATION WITHOUT FURTHER ANGULAR ADJUSTMENT OF THE VIAL WITH RESPECT TO THE WORKING SURFACE OF THE FRAME.
Claim 2
Dependent Claim
164 words
A LEVEL COMPRISING A FRAME HAVING A WORKING SURFACE, THE FRAME BEING PROVIDED WITH AN OPENING FOR RECEIPT OF A LEVEL VIAL, MEANS ON THE FRAME BORDERING THE OPENING AND DISPOSED IN A PREDETERMINED FIXED ANGULAR RELATIONSHIP WITH THE WORKING SURFACE FOR ENGAGING AND RETAINING THE LEVEL VIAL AND FOR POSITIONING THE VIAL AT A PREDETERMINED ANGLE WITH RESPECT TO THE WORKING SURFACE OF THE FRAME WITHOUT FURTHER ANGULAR ADJUSTMENT WITH RESPECT TO THE WORKING SURFACE, AND A LEVEL VIAL HAVING A SYMMETRICAL GENERALLY BARREL SHAPED BORE DISPOSED IN CONCENTRIC RELATION WITH THE LONGITUDINAL AXIS OF THE VIAL, THE OUTER SURFACE OF THE VIAL BEING IN A PREDETERMINED REGISTRY WITH RESPECT TO THE LONGITUDINAL AXIS OF THE VIAL, THE OUTER SURFACE OF THE VIAL BEING POSITIONED IN CLOSEFITTING ENGAGEMENT WITH THE ENGAGING AND RETAINING MEANS ON THE FRAME BORDERING THE OPENING PROVIDED THEREIN TO PRODUCE A VIAL INSTALLATION WITHOUT FURTHER ANGULAR ADJUSTMENT OF THE VIAL WITH RESPECT TO THE WORKING SURFACE OF THE FRAME.
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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) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |