US2882631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display materials, devices and systems
Assignee: Individual
•
Filing: 1952-09-05
•
Granted: 1959-04-21
•
Expires: 1972-09-05
Abstract
No abstract record available.
Inventors
- 👤 Boone Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:01
CPC Classifications
G; G09; G09F; G09F19/00; G09F19/12; G09F19/20; G09F19/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2139824A
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US2158129A
Cited
US2393968A
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US2323059A
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US2700919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |