Patent DE914086C successfully refreshed from Google Patents.
US2763177A
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US
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Solar and stellar tracker
Assignee: Northrop Grumman Corp
•
Filing: 1952-10-24
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Granted: 1956-09-18
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Expires: 1972-10-24
Abstract
No abstract record available.
Inventors
- 👤 Philip H Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:54
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/78; G01S3/782; G01S3/785; G01S3/786; G01C; G01C21/00; G01C21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1755740A
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US1889151A
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US2039878A
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US2449287A
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US2462925A
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US2588792A
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US2513367A
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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) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |