US3497576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for permanently imprinting an identification mark in the surface of a heat-softenable material
Assignee: Bausch and Lomb Inc
•
Filing: 1969-03-17
•
Granted: 1970-02-24
•
Expires: 1989-03-17
Abstract
No abstract record available.
Inventors
- 👤 Martin Dvorin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:34
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/02; B29C53/00; B29C53/02; B29C53/04; B29C53/06; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/242; B29C66/00; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91411; B29C66/9161; B29C66/91641; B29C66/91643; B29C66/91651; B29C66/91653; B29C37/00; B29C37/0053; B29C37/0057; B29C66/95; B29C66/959; B29C66/9592
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |