Patent US3465221A successfully refreshed from Google Patents.
US3465221A
Expired / Lapsed
US
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Compass card autopilot with 360 degree directional control
Assignee: Ametek Inc
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Filing: 1967-01-23
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Granted: 1969-09-02
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Expires: 1987-01-23
Abstract
No abstract record available.
Inventors
- 👤 Henry L Arce
- 👤 Jack L Whitener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:06
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/02; G05D1/0206
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) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |