US2901849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Butler Manufacturing Co
•
Filing: 1956-08-09
•
Granted: 1959-09-01
•
Expires: 1976-08-09
Abstract
No abstract record available.
Inventors
- 👤 Richard P Callison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:35
CPC Classifications
G; G09; G09F; G09F15/00; G09F15/0006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US957259A
Cited
US1745987A
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US1742667A
Cited
US1853141A
Cited
US1853143A
Cited
GB339810A
Cited
US1860919A
Cited
US2194367A
Cited
US2205818A
Cited
US2775833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |