US2463959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prismatic telescope
Assignee: Bausch and Lomb Inc
•
Filing: 1946-04-26
•
Granted: 1949-03-08
•
Expires: 1966-04-26
Abstract
No abstract record available.
Inventors
- 👤 Edward F Flint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:44
CPC Classifications
G; G02; G02B; G02B23/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE285116C
Cited
DE285677C
Cited
FR475789A
Cited
GB141961A
Cited
DE377239C
Cited
GB274616A
Cited
GB449552A
Cited
US2135531A
Cited
US2225039A
Cited
US2400252A
Cited
US2392154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |