US3048879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fountain pen
Assignee: SPEEDRY CHEMICAL PRODUCTS Inc
•
Filing: 1959-08-03
•
Granted: 1962-08-14
•
Expires: 1979-08-03
Abstract
No abstract record available.
Inventors
- 👤 Sidney N Rosenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:06
CPC Classifications
B; B43; B43K; B43K8/00; B43K8/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US721911A
Cited
US1393960A
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US1580070A
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US2416596A
Cited
US2392840A
Cited
US2438786A
Cited
US2640216A
Cited
FR1071169A
Cited
US2713176A
Cited
US2768403A
Cited
US2931338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |