US2432668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of optical lenses, prisms, and like optical elements
Assignee: Individual
•
Filing: 1944-01-12
•
Granted: 1947-12-16
•
Expires: 1964-01-12
Abstract
No abstract record available.
Inventors
- 👤 Kingston Arthur William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:49
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/02; B29C43/021; B29D; B29D11/00; B29D11/00009; B29C43/32; B29C43/36; B29C43/361; B29C2043/3615; B29C2043/3618; B29L; B29L2011/00; B29L2011/0016; Y; Y10; Y10S; Y10S264/00; Y10S264/65; Y10S264/71; Y10S425/00; Y10S425/004; Y10S425/808
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-15 | 1951-06-16 | 1951-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-15 | 1955-06-16 | 1955-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-15 | 1959-06-16 | 1959-12-16 | $7700.00 | Window Closed / Lapsed |