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US2472258A
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Assignee: STAIR
•
Filing: 1942-01-09
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Granted: 1949-06-07
•
Expires: 1962-01-09
Abstract
No abstract record available.
Inventors
- 👤 Harold L Mccleery
- 👤 Carlyle B Stair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:12
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1958631A
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US2186922A
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US2019976A
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US2150776A
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US2181728A
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US2161896A
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US2284850A
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US2267986A
Cited
US2340634A
Cited
US2347194A
Cited
US2334143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |