US2453436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flight training apparatus
Assignee: International Mutoscope Corp
•
Filing: 1943-03-09
•
Granted: 1948-11-09
•
Expires: 1963-03-09
Abstract
No abstract record available.
Inventors
- 👤 Hertz Ben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:31
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR852687A
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US1393456A
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US1564138A
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US1825462A
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US2164412A
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US2099857A
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US2301685A
Cited
US2326764A
Cited
US2312370A
Cited
US2307840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |