Patent US2770164A successfully refreshed from Google Patents.
US2770164A
Expired / Lapsed
US
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Correction of the condition of strabismus in human vision
Assignee: Individual
•
Filing: 1952-03-25
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Granted: 1956-11-13
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Expires: 1972-03-25
Abstract
No abstract record available.
Inventors
- 👤 Elizabeth P Olmsted
- 👤 Richard R Francis
- 👤 Ira G Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:08
CPC Classifications
A; A61; A61H; A61H5/00; A61B; A61B3/00; A61B3/02; A61B3/08; A61B3/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1270830A
Cited
US1370885A
Cited
GB265379A
Cited
US1856163A
Cited
FR630039A
Cited
US1903778A
Cited
US1955047A
Cited
US2032771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |