US2475501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Program control unit
Assignee: Simplex Time Recorder Co
•
Filing: 1946-04-09
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Granted: 1949-07-05
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Expires: 1966-04-09
Abstract
No abstract record available.
Inventors
- 👤 Harold E Hobby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:49
CPC Classifications
G; G04; G04C; G04C23/00; G04C23/14; G04C23/26; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503; Y10T74/1508; Y10T74/1518; Y10T74/1523; Y10T74/21; Y10T74/2101; Y10T74/2102; Y10T74/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |