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US3474556A
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Navigational chart display apparatus
Assignee: ROYAL J SCOVILL
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Filing: 1969-01-09
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Granted: 1969-10-28
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Expires: 1989-01-09
Abstract
No abstract record available.
Inventors
- 👤 Royal J Scovill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:18
CPC Classifications
G; G09; G09B; G09B29/00; G09B29/10; G09B29/106; G09B29/108; G01; G01C; G01C21/00; G01C21/20; G01C21/22; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2769977A
Cited
US2637848A
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US2814199A
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US2836816A
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DE1128682B
Cited
US3191315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |