US2440003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helicopter and airplane sustained aircraft
Assignee: Individual
•
Filing: 1945-06-12
•
Granted: 1948-04-20
•
Expires: 1965-06-12
Abstract
No abstract record available.
Inventors
- 👤 Glenn H Bowlus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:16
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0091; B64C29/0008; B64C29/0016; B64C29/0025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1875267A
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US991686A
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US1414241A
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US1794202A
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US1833722A
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US1951817A
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US2094997A
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FR810054A
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US2300268A
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US2308802A
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US2382460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |