US2522914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warning system for balance indicators
Assignee: Bendix Aviation Corp
•
Filing: 1944-02-21
•
Granted: 1950-09-19
•
Expires: 1964-02-21
Abstract
No abstract record available.
Inventors
- 👤 Henry T Winchel
- 👤 Clarence A Addis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:23
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1787992A
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US1867264A
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US1958258A
Cited
US2171561A
Cited
GB524526A
Cited
US2317400A
Cited
US2354618A
Cited
US2350835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |