Patent US3059876A successfully refreshed from Google Patents.
US3059876A
Expired / Lapsed
US
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Vertical take-off airplane
Assignee: Individual
•
Filing: 1958-07-03
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Granted: 1962-10-23
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Expires: 1978-07-03
Abstract
No abstract record available.
Inventors
- 👤 Haviland H Platt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:16
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C29/0033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE506664A
Cited
US1671865A
Cited
US1871015A
Cited
FR729026A
Cited
US1891166A
Cited
FR793426A
Cited
US2288820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |