US2998529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic astrocompass
Assignee: Kollsman Instrument Corp
•
Filing: 1958-06-19
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Granted: 1961-08-29
•
Expires: 1978-06-19
Abstract
No abstract record available.
Inventors
- 👤 David B Nichinson
- 👤 James J Connors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:57
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/78; G01S3/782
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |