US2893533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter and sound enveloping furniture therefor
Assignee: Underwood Corp
•
Filing: 1956-07-27
•
Granted: 1959-07-07
•
Expires: 1976-07-27
Abstract
No abstract record available.
Inventors
- 👤 Henry B Childs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:03
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US747309A
Cited
GB102031A
Cited
US1542194A
Cited
US1573665A
Cited
US1705151A
Cited
US1656714A
Cited
US1939250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |