Patent US2421077A successfully refreshed from Google Patents.
US2421077A
Expired / Lapsed
US
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Projector apparatus
Assignee: Bendix Aviation Corp
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Filing: 1944-12-08
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Granted: 1947-05-27
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Expires: 1964-12-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:30
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/20; G01C21/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US993296A
Cited
US1137512A
Cited
US1160184A
Cited
US1579880A
Cited
US1703945A
Cited
US2190569A
Cited
US2279463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-26 | 1950-11-25 | 1951-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-26 | 1954-11-25 | 1955-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-26 | 1958-11-25 | 1959-05-27 | $7700.00 | Window Closed / Lapsed |