Patent US2689685A successfully refreshed from Google Patents.
Patent US2938499A successfully refreshed from Google Patents.
US2938499A
Expired / Lapsed
US
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Combination pen and pressurized filling means
Assignee: Individual
•
Filing: 1956-07-20
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Granted: 1960-05-31
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Expires: 1976-07-20
Abstract
No abstract record available.
Inventors
- 👤 Lindenbaum Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:01
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/75; B43; B43K; B43K11/00; B43L; B43L25/00; B43L25/02; B43L25/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE15675E
Cited
DE680153C
Cited
US2107424A
Cited
US2597250A
Cited
US2678762A
Cited
US2728509A
Cited
US2737329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |