US2627844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fountain pen for viscous ink
Assignee: International Business Machines Corp
•
Filing: 1948-07-22
•
Granted: 1953-02-10
•
Expires: 1968-07-22
Abstract
No abstract record available.
Inventors
- 👤 Reynold B Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:05
CPC Classifications
B; B43; B43K; B43K23/00; B43K23/08; B43K23/12; B43K23/122; B43K23/124; B43K23/126; B43K5/00; B43K5/18; B43K5/1818; B43K5/1827; B43K5/1836; B43K5/1845; B43K7/00; B43K8/00; B43K8/003; B43K8/14; B43K8/143; B43K8/16
Claims Analysis
Total Claims: 0
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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) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |