US2596799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aberration corrector member for image forming optical objectives
Assignee: American Optical Corp
•
Filing: 1947-06-27
•
Granted: 1952-05-13
•
Expires: 1967-06-27
Abstract
No abstract record available.
Inventors
- 👤 Edgar D Tillyer
- 👤 Alva H Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:56
CPC Classifications
G; G02; G02B; G02B13/00; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/903
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US51529A
Cited
GB190903444A
Cited
US934579A
Cited
US1048227A
Cited
US990303A
Cited
US1178256A
Cited
US1178257A
Cited
US1446634A
Cited
US1536828A
Cited
US1520617A
Cited
US1560168A
Cited
US1619341A
Cited
US1739743A
Cited
US1815992A
Cited
US1968222A
Cited
US2031792A
Cited
US2037327A
Cited
US2100290A
Cited
US2377268A
Cited
US2332930A
Cited
US2430150A
Cited
US2415211A
Cited
US2383115A
Cited
US2479907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |