Patent US2752523A successfully refreshed from Google Patents.
US2606529A
Expired / Lapsed
US
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Reservoir pen
Assignee: Individual
•
Filing: 1950-07-12
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Granted: 1952-08-12
•
Expires: 1970-07-12
Abstract
No abstract record available.
Inventors
- 👤 Wagner Ernest Verrinder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:07
CPC Classifications
B; B43; B43K; B43K7/00; B43K7/02; B43K7/03; B43K7/035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US68727A
Cited
US960413A
Cited
CH213442A
Cited
US2249163A
Cited
US2438786A
Cited
US2557409A
Cited
US2426453A
Cited
US2505211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |