Patent US2536367A successfully refreshed from Google Patents.
US2536367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pupillometer having miniature condensing lens for creating light images
Assignee: Individual
•
Filing: 1946-08-12
•
Granted: 1951-01-02
•
Expires: 1966-08-12
Abstract
No abstract record available.
Inventors
- 👤 Holmes Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:41
CPC Classifications
G; G02; G02C; G02C13/00; G02C13/003; G02C13/005; A; A61; A61B; A61B3/00; A61B3/10; A61B3/11; A61B3/111
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US306919A
Cited
DE170415C
Cited
US729848A
Cited
US934579A
Cited
US1264133A
Cited
US1327163A
Cited
US1726314A
Cited
US1602116A
Cited
US1935175A
Cited
US1985067A
Cited
US1981439A
Cited
US2326030A
Cited
US2376554A
Cited
US2393308A
Cited
US2389428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |