US3021097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic pilot for dirigible craft
Assignee: Unisys Corp
•
Filing: 1956-06-28
•
Granted: 1962-02-13
•
Expires: 1976-06-28
Abstract
No abstract record available.
Inventors
- 👤 Hecht Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:45
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0858; B; B64; B64C; B64C27/00; B64C27/32; G05D1/0055; G05D1/0061
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2443192A
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US2451263A
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US2639108A
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US2695145A
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US2680579A
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US2678177A
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US2770428A
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US2797882A
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US2859926A
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US2823879A
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US2852212A
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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) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |