US2647491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copyholder
Assignee: Underwood Corp
•
Filing: 1949-12-14
•
Granted: 1953-08-04
•
Expires: 1969-12-14
Abstract
No abstract record available.
Inventors
- 👤 Toggenburger John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:35
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2068894A
Cited
US1939671A
Cited
US1969916A
Cited
US2162706A
Cited
US2369241A
Cited
FR880722A
Cited
GB548847A
Cited
US2494129A
Cited
US2462273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |