US1505447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pupillary-measuring instrument
Assignee: UHLEMANN OPTICAL Co
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Filing: 1922-05-09
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Granted: 1924-08-19
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Expires: 1942-05-09
Abstract
No abstract record available.
Inventors
- 👤 William R Uhlemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:31
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
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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) | 1927-08-19 | 1928-02-18 | 1928-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-08-19 | 1932-02-18 | 1932-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-08-19 | 1936-02-18 | 1936-08-19 | $7700.00 | Window Closed / Lapsed |