Patent US3307264A successfully refreshed from Google Patents.
US3307264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grading instruments
Assignee: Individual
•
Filing: 1965-11-17
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Granted: 1967-03-07
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Expires: 1985-11-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles Wolfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:33
CPC Classifications
G; G01; G01C; G01C5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A GRADING INSTRUMENT COMPRISING A POST, A TARGET, SAID POST INCLUDING A ROD AND A TUBE, SAID ROD MOUNTED IN TELESCOPING RELATION IN SAID TUBE, MEANS FOR RELEASABLY CLAMPING TOGETHER SAID ROD AND TUBE, SAID TARGET HAVING A LONGITUDINAL BORE THEREIN, SAID TUBE AND A PORTION OF SAID ROD HAVING SUBSTANTIALLY THE SAME OUTSIDE DIAMETER, SAID TARGET BORE HAVING A LARGER DIAMETER THAN SAID TUBE AND ROD, MEANS FOR CLAMPING SAID TARGET SELECTIVELY TO SAID TUBE AND SAID ROD, AND MEANS FOR SUPPORTING THE TUBE UPRIGHT, WHEREBY THE HEIGHT OF THE TARGET RELATIVE TO THE POST IS ADJUSTABLE.
Claim 2
Dependent Claim
98 words
A GRADING INSTRUMENT COMPRISING A POST, A TARGET, SAID POST INCLUDING A ROD AND A TUBE, SAID ROD MOUNTED IN TELESCOPING RELATION IN SAID TUBE, MEANS FOR RELEASABLY CLAMPING TOGETHER SAID ROD AND TUBE, SAID TARGET HAVING A LONGITUDINAL BORE THEREIN, SAID TUBE AND A PORTION OF SAID ROD HAVING SUBSTANTIALLY THE SAME OUTSIDE DIAMETER, SAID TARGET BORE HAVING A LARGER DIAMETER THAN SAID TUBE AND ROD, MEANS FOR CLAMPING SAID TARGET SELECTIVELY TO SAID TUBE AND SAID ROD, AND MEANS FOR SUPPORTING THE TUBE UPRIGHT, WHEREBY THE HEIGHT OF THE TARGET RELATIVE TO THE POST IS ADJUSTABLE.
References Cited (Backward Citations)
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US1891573A
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US2077828A
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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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |