Patent US2917283A successfully refreshed from Google Patents.
US2917283A
Expired / Lapsed
US
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Traffic control apparatus for a closed area
Assignee: WILLIAM G TEAL
•
Filing: 1954-04-22
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Granted: 1959-12-15
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Expires: 1974-04-22
Abstract
No abstract record available.
Inventors
- 👤 Lumus L Sumners
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:03
CPC Classifications
G; G07; G07F; G07F17/00; G07F17/14; G07F17/145; Y; Y10; Y10S; Y10S194/00; Y10S194/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2735202A
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US2081245A
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GB551591A
Cited
US2581788A
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US2528790A
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US2588502A
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US2637920A
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US2657486A
Cited
US2614239A
Cited
US2878998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |