Patent US147659A successfully refreshed from Google Patents.
Patent US2149148A successfully refreshed from Google Patents.
US2149148A
Expired / Lapsed
US
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Optical instrument for orthoptic purposes
Assignee: Individual
•
Filing: 1936-08-18
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Granted: 1939-02-28
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Expires: 1956-08-18
Abstract
No abstract record available.
Inventors
- 👤 Harvey C Rones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:13
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/02; A61B3/028; A61B3/04; A61H; A61H5/00
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) | 1942-02-27 | 1942-08-29 | 1943-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-27 | 1946-08-29 | 1947-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-27 | 1950-08-29 | 1951-02-28 | $7700.00 | Window Closed / Lapsed |