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US2942782A
Expired / Lapsed
US
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Sonar ray tracer
Assignee: Unisys Corp
•
Filing: 1955-01-26
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Granted: 1960-06-28
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Expires: 1975-01-26
Abstract
No abstract record available.
Inventors
- 👤 Robert B Blizard
- 👤 Proskauer Richard
- 👤 Vacquier Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:10
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/48; G01; G01V; G01V1/00; G01V1/28; G01V1/282; G06G7/12; G06G7/32; G06G7/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2612621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |