Patent US2775778A successfully refreshed from Google Patents.
US2775778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eyeglass lens cleaner with material supply
Assignee: Individual
•
Filing: 1955-04-25
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Granted: 1957-01-01
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Expires: 1975-04-25
Abstract
No abstract record available.
Inventors
- 👤 Brillhart Geraldine Mattson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:56
CPC Classifications
G; G02; G02C; G02C13/00; G02C13/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US902796A
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US1006857A
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US1144483A
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US1261585A
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US1942928A
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US1902681A
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US2055314A
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US2196235A
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US2227710A
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US2253514A
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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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |