US2628530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ophthalmic lens device in welder's hood
Assignee: Individual
•
Filing: 1949-08-03
•
Granted: 1953-02-17
•
Expires: 1969-08-03
Abstract
No abstract record available.
Inventors
- 👤 Ellis L Rabben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:08
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/04; A61F9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE234610C
Cited
US701788A
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US1033965A
Cited
US2270238A
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US2263116A
Cited
US2333362A
Cited
US2388574A
Cited
US2391361A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |