US2674944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller stamp
Assignee: Individual
•
Filing: 1951-01-03
•
Granted: 1954-04-13
•
Expires: 1971-01-03
Abstract
No abstract record available.
Inventors
- 👤 Kalstrom Arthur John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:53
CPC Classifications
B; B41; B41K; B41K1/00; B41K1/36; B41K1/56; B41K1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US403082A
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US459387A
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US662625A
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US714835A
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US722811A
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US916357A
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US949437A
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US1070763A
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US1420154A
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US1445627A
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US2475524A
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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) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |