US2432950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making optical wedges
Assignee: Bausch and Lomb Inc
•
Filing: 1943-09-24
•
Granted: 1947-12-16
•
Expires: 1963-09-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Turner
- 👤 Jr Osmar A Ullrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:40
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/205; C; C23; C23C; C23C14/00; C23C14/04; C23C14/042; C23C14/044; G02B1/00; G02B1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2341827A
Cited
US767216A
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US2160981A
Cited
US2259395A
Cited
US2263008A
Cited
US2301456A
Cited
US2331027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-15 | 1951-06-16 | 1951-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-15 | 1955-06-16 | 1955-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-15 | 1959-06-16 | 1959-12-16 | $7700.00 | Window Closed / Lapsed |