US2634067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Course selector system
Assignee: Unisys Corp
•
Filing: 1948-07-16
•
Granted: 1953-04-07
•
Expires: 1968-07-16
Abstract
No abstract record available.
Inventors
- 👤 Rawley D Mccoy
- 👤 Jr Richard Scheib
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:32
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/02; G05D1/0202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE78908C
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US1360694A
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US1497059A
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US1617310A
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US1585210A
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US1694237A
Cited
US1885098A
Cited
US2115498A
Cited
US2120950A
Cited
US2308566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |