Patent US2293446A successfully refreshed from Google Patents.
US2293446A
Expired / Lapsed
US
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Facial surveyor
Assignee: B D DISTRIBUTORS Inc
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Filing: 1941-05-21
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Granted: 1942-08-18
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Expires: 1961-05-21
Abstract
No abstract record available.
Inventors
- 👤 Rozsa Esther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:08
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/103; A61B5/107; A61B5/68; A61B5/6801; A61B5/6813; A61B5/6814; A61B5/6819
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-08-17 | 1946-02-16 | 1946-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-08-17 | 1950-02-16 | 1950-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-08-17 | 1954-02-16 | 1954-08-18 | $7700.00 | Window Closed / Lapsed |