Patent US4253193A successfully refreshed from Google Patents.
Patent US2431714A successfully refreshed from Google Patents.
US2431714A
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US
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Selective printing and punching machine
Assignee: Underwood Corp
•
Filing: 1945-10-16
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Granted: 1947-12-02
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Expires: 1965-10-16
Abstract
No abstract record available.
Inventors
- 👤 Oscar J Sundstrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:26
CPC Classifications
G; G06; G06C; G06C11/00; G06C11/08; G06C11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1190752A
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US1701053A
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US1884189A
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US2050745A
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US2048396A
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US2195844A
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US2168434A
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US2211310A
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US2293713A
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US2335949A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-01 | 1951-06-02 | 1951-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-01 | 1955-06-02 | 1955-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-01 | 1959-06-02 | 1959-12-02 | $7700.00 | Window Closed / Lapsed |