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US3406418A
Expired / Lapsed
US
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Lens-cleaning paper
Assignee: HARRY J HURLEY JR
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Filing: 1967-09-27
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Granted: 1968-10-22
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Expires: 1987-09-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry J Hurley
- 👤 Walter B Shelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:40
CPC Classifications
G; G02; G02C; G02C13/00; G02C13/006; C; C11; C11D; C11D3/00; C11D3/16; C11D3/24; C11D3/245; D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1966633A
Cited
US2353978A
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US2333794A
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US2288714A
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US2633593A
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US2947016A
Cited
US3075228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |