US2573197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-driven mechanism for operating type bars and other instrumentalities of typewriters or like machines
Assignee: Royal Typewriter Co Inc
•
Filing: 1949-07-01
•
Granted: 1951-10-30
•
Expires: 1969-07-01
Abstract
No abstract record available.
Inventors
- 👤 Henry J Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:35
CPC Classifications
B; B41; B41J; B41J7/00; B41J7/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US589003A
Cited
US1202227A
Cited
US1737439A
Cited
US1984410A
Cited
US2170212A
Cited
US2278739A
Cited
US2362138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |