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Patent US2904915A successfully refreshed from Google Patents.
US2904915A
Expired / Lapsed
US
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Work control and scheduling device
Assignee: Individual
•
Filing: 1958-01-16
•
Granted: 1959-09-22
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Expires: 1978-01-16
Abstract
No abstract record available.
Inventors
- 👤 William A Steward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:14
CPC Classifications
B; B41; B41L; B41L5/00; B41L5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US160287A
Cited
CH8155A
Cited
US1844542A
Cited
US2140253A
Cited
US2163128A
Cited
US2163523A
Cited
US2657487A
Cited
US2764826A
Cited
US2791040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |