Patent US2847661A successfully refreshed from Google Patents.
US2847661A
Expired / Lapsed
US
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Rectangular coordinate point data display
Assignee: Individual
•
Filing: 1953-09-28
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Granted: 1958-08-12
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Expires: 1973-09-28
Abstract
No abstract record available.
Inventors
- 👤 Charles F Althouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:22
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/10; Y; Y10; Y10S; Y10S367/00; Y10S367/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2110746A
Cited
US2586605A
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US2528202A
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US2677199A
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US2621246A
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US2584599A
Cited
US2525893A
Cited
US2688126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |