Patent US3672855A successfully refreshed from Google Patents.
US3672855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass lens edging apparatus
Assignee: Individual
•
Filing: 1970-11-30
•
Granted: 1972-06-27
•
Expires: 1990-11-30
Abstract
Abstract A glass lens edging apparatus which senses the inside periphery of the lens holding frame at a plurality of points and uses these sensor points for controlling lens forming equipment.
Inventors
- 👤 Charles R Bright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:08
CPC Classifications
B; B29; B29D; B29D12/00; B29D12/02; B24; B24B; B24B9/00; B24B9/02; B24B9/06; B24B9/08; B24B9/14; B24B9/144; B29D11/00; B29D11/00932
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |