Patent US2414643A successfully refreshed from Google Patents.
US2414643A
Expired / Lapsed
US
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Printing and adding machine
Assignee: AB Dick Co
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Filing: 1940-07-29
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Granted: 1947-01-21
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Expires: 1960-07-29
Abstract
No abstract record available.
Inventors
- 👤 Walter T Gollwitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:00
CPC Classifications
B; B41; B41L; B41L47/00; B41L47/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-01-20 | 1950-07-22 | 1951-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-01-20 | 1954-07-22 | 1955-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-01-20 | 1958-07-22 | 1959-01-21 | $7700.00 | Window Closed / Lapsed |