Patent US2302918A successfully refreshed from Google Patents.
US2302918A
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US
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Method of molding blanks of predetermined mass
Assignee: Univis Lens Co
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Filing: 1940-09-12
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Granted: 1942-11-24
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Expires: 1960-09-12
Abstract
No abstract record available.
Inventors
- 👤 Charles V Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:51
CPC Classifications
B; B29; B29C; B29C31/00; B29C31/04; B29C31/06; B29B; B29B11/00; B29B11/02; B29D; B29D11/00; B29D11/00009; B29C43/00; Y; Y10; Y10S; Y10S264/00; Y10S264/64; Y10S425/00; Y10S425/808
Claims Analysis
Total Claims: 0
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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) | 1945-11-23 | 1946-05-25 | 1946-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-23 | 1950-05-25 | 1950-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-23 | 1954-05-25 | 1954-11-24 | $7700.00 | Window Closed / Lapsed |