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US3491459A
Expired / Lapsed
US
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Semi-graphic panel
Assignee: Lummus Technology LLC
•
Filing: 1967-03-03
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Granted: 1970-01-27
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Expires: 1987-03-03
Abstract
No abstract record available.
Inventors
- 👤 Charles M Bowden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:18
CPC Classifications
G; G09; G09D; G09D1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1545921A
Cited
US1901861A
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US2105008A
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US2319519A
Cited
US2503126A
Cited
US2835987A
Cited
US3084464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |