US2818017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined typewriter and printing computing machine
Assignee: Underwood Corp
•
Filing: 1954-08-13
•
Granted: 1957-12-31
•
Expires: 1974-08-13
Abstract
No abstract record available.
Inventors
- 👤 Toggenburger John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:02
CPC Classifications
G; G06; G06C; G06C29/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317604A
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US1924653A
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US1975808A
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US2183920A
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US2194270A
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US2686469A
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US2202948A
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US2272079A
Cited
US2348789A
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US2687251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |