Patent US2430994A successfully refreshed from Google Patents.
US2430994A
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Method of coating lenses
Assignee: RCA Corp
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Filing: 1944-07-29
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Granted: 1947-11-18
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Expires: 1964-07-29
Abstract
No abstract record available.
Inventors
- 👤 James H Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:59
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/26; C03; C03C; C03C2217/00; C03C2217/20; C03C2217/28; C03C2217/287; C03C2217/288; C03C2218/00; C03C2218/10; C03C2218/15; C03C2218/151
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1273529A
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US1763268A
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US1604544A
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US1867524A
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US1894685A
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US2060509A
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AU172936A
Cited
US2338233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |