US3035490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra-violet lens
Assignee: International Business Machines Corp
•
Filing: 1958-12-31
•
Granted: 1962-05-22
•
Expires: 1978-12-31
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Tibbetts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:32
CPC Classifications
G; G02; G02B; G02B13/00; G02B13/14; G02B13/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1541407A
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US1540752A
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US1580751A
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US2085437A
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FR847600A
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US2416032A
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US2493110A
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US2561077A
Cited
US2645155A
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US2571307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |