US2609532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Altitude and distance recorder
Assignee: WALLACE
•
Filing: 1947-06-16
•
Granted: 1952-09-02
•
Expires: 1967-06-16
Abstract
No abstract record available.
Inventors
- 👤 Wallace Marcel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/76; G01S13/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2252083A
Cited
US2405238A
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US2344562A
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US2403603A
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US2407287A
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US2403626A
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US2419525A
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US2421106A
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US2403562A
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US2422295A
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US2468045A
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US2521697A
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US2499941A
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US2430283A
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US2492120A
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US2513282A
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US2517540A
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US2500638A
Cited
US2483097A
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US2490268A
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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) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |