US2598342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Office machine
Assignee: MARCHANT CALCULATING MACHINE
•
Filing: 1948-02-24
•
Granted: 1952-05-27
•
Expires: 1968-02-24
Abstract
No abstract record available.
Inventors
- 👤 Robert E Boyden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:52
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2278405A
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US1458616A
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US1497918A
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US1858778A
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US2265618A
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US2273491A
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US2389774A
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US2273195A
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US2404915A
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US2434996A
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US2418043A
Cited
US2431351A
Cited
US2489696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |