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Patent US3140911A successfully refreshed from Google Patents.
US3140911A
Expired / Lapsed
US
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Elevational profile transcribing apparatus from terrestrial land maps or the like
Assignee: A F GRAF VON SADEN
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Filing: 1960-05-23
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Granted: 1964-07-14
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Expires: 1980-05-23
Abstract
No abstract record available.
Inventors
- 👤 Charles R Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:01
CPC Classifications
G; G01; G01C; G01C7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2965432A
Cited
US2982940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |