US3144737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum foil lens grinding pad
Assignee: Bausch and Lomb Inc
•
Filing: 1962-09-27
•
Granted: 1964-08-18
•
Expires: 1982-09-27
Abstract
No abstract record available.
Inventors
- 👤 Kenneth D Faas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:58
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/01; B24D; B24D9/00; B24D9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2282650A
Cited
US2752738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |