US2618184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for expanding lens openings
Assignee: Individual
•
Filing: 1949-09-29
•
Granted: 1952-11-18
•
Expires: 1969-09-29
Abstract
No abstract record available.
Inventors
- 👤 Edward G Goedhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:11
CPC Classifications
G; G02; G02C; G02C13/00; G02C13/001; B; B25; B25B; B25B7/00; B25B7/02; B25B7/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US448451A
Cited
US753456A
Cited
US1507534A
Cited
US1219160A
Cited
US1750121A
Cited
FR666794A
Cited
US2488484A
Cited
US2471372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |