Patent US2607174A successfully refreshed from Google Patents.
US2607174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of grinding eyeglass lenses
Assignee: Super Cut Inc
•
Filing: 1949-11-25
•
Granted: 1952-08-19
•
Expires: 1969-11-25
Abstract
No abstract record available.
Inventors
- 👤 Lanius Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:21
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/01; B24B13/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1256256A
Cited
US1381245A
Cited
US1996369A
Cited
US2145888A
Cited
US2137200A
Cited
US2194546A
Cited
US2225826A
Cited
US2226506A
Cited
US2309819A
Cited
US2355345A
Cited
US2409363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |