US3453049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens cleaning system
Assignee: Wager Robert H Co Inc
•
Filing: 1965-10-21
•
Granted: 1969-07-01
•
Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Robert H Wager Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:11
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1012403A
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US1222156A
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US1708987A
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US1937721A
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GB668433A
Cited
US2788009A
Cited
US2866379A
Cited
US2966092A
Cited
US3032879A
Cited
US3234846A
Cited
US3232482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |