US2543019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens dissolution method and apparatus
Assignee: Farnsworth Research Corp
•
Filing: 1944-11-11
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Granted: 1951-02-27
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Expires: 1964-11-11
Abstract
No abstract record available.
Inventors
- 👤 Francois C P Henroteau
- 👤 Sanford S Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:33
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00009
Claims Analysis
Total Claims: 0
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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) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |