US1630262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making ophthalmic blanks
Assignee: American Optical Corp
•
Filing: 1924-07-16
•
Granted: 1927-05-31
•
Expires: 1944-07-16
Abstract
No abstract record available.
Inventors
- 👤 Fraser Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:30
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/02; B29C43/021; B29D; B29D12/00; B29D12/02; B29C2043/023; B29C43/32; B29C43/34; B29C2043/3444; B29C31/00; B29C31/04; B29C31/041; B29L; B29L2012/00; B29L2012/005; Y; Y10; Y10S; Y10S264/00; Y10S264/66
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) | 1930-05-30 | 1930-11-29 | 1931-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-05-30 | 1934-11-29 | 1935-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-05-30 | 1938-11-29 | 1939-05-31 | $7700.00 | Window Closed / Lapsed |