Patent US3199198A successfully refreshed from Google Patents.
US3199198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Level sighting device
Assignee: Individual
•
Filing: 1961-06-21
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Granted: 1965-08-10
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Expires: 1981-06-21
Abstract
No abstract record available.
Inventors
- 👤 Arnold Ollen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:49
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/64; G02B27/646; G02B27/648
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A LEVEL SIGHTING DEVICE COMPRISING A CASING HAVING OPPOSED SIGHT OPENINGS, AN ELONGATED SIGHTING TUBE BETWEEN AND ALIGNED WITH SAID SIGHT OPENINGS HAVING AN END WALL WITH A SMALL CENTRAL OPENING AND A CROSS WIRE CENTERED THEREIN AT THE END THEREOF OPPOSITE SAID WALL, A WEIGHT FIXED TO AND SUSPENDED CENTRALLY FROM SAID TUBE, AND MEANS SUSPENDING SAID TUBE AND WEIGHT FROM THE UPPER PART OF SAID CASING, SAID SUSPENSION MEANS COMPRISING A PAIR OF LONGITUDINALLY SPACED TRANSVERSE MEMBERS CARRIED BY SAID CASING, A PAIR OF AXIALLY ALIGNED PIVOT MEMBERS CARRIED BY SAID TRANSVERSE MEMBERS AND HAVING ADJA-
Claim 2
Dependent Claim
98 words
A LEVEL SIGHTING DEVICE COMPRISING A CASING HAVING OPPOSED SIGHT OPENINGS, AN ELONGATED SIGHTING TUBE BETWEEN AND ALIGNED WITH SAID SIGHT OPENINGS HAVING AN END WALL WITH A SMALL CENTRAL OPENING AND A CROSS WIRE CENTERED THEREIN AT THE END THEREOF OPPOSITE SAID WALL, A WEIGHT FIXED TO AND SUSPENDED CENTRALLY FROM SAID TUBE, AND MEANS SUSPENDING SAID TUBE AND WEIGHT FROM THE UPPER PART OF SAID CASING, SAID SUSPENSION MEANS COMPRISING A PAIR OF LONGITUDINALLY SPACED TRANSVERSE MEMBERS CARRIED BY SAID CASING, A PAIR OF AXIALLY ALIGNED PIVOT MEMBERS CARRIED BY SAID TRANSVERSE MEMBERS AND HAVING ADJA-
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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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |