US2708331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cooling spectacle lenses subjected to the action of a bevel edging machine
Assignee: HARRY W MITCHLER
•
Filing: 1953-04-06
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Granted: 1955-05-17
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Expires: 1973-04-06
Abstract
No abstract record available.
Inventors
- 👤 Vincent B Schmaltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:54
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/10; B23Q11/1084; B24; B24B; B24B55/00; B24B55/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1396123A
Cited
US1522523A
Cited
US1662023A
Cited
US1659964A
Cited
US1651532A
Cited
US1630264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |