US2747337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic edge grinder for optical lenses
Assignee: Individual
•
Filing: 1953-09-02
•
Granted: 1956-05-29
•
Expires: 1973-09-02
Abstract
No abstract record available.
Inventors
- 👤 John H Geula
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:02
CPC Classifications
B; B24; B24B; B24B9/00; B24B9/02; B24B9/06; B24B9/08; B24B9/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1254253A
Cited
US1226329A
Cited
US1489606A
Cited
US1659964A
Cited
US1619358A
Cited
US2617236A
Cited
US2651890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |