US2683431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming pen nibs
Assignee: Individual
•
Filing: 1950-08-02
•
Granted: 1954-07-13
•
Expires: 1970-08-02
Abstract
No abstract record available.
Inventors
- 👤 Henry E Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:10
CPC Classifications
B; B60; B60B; B60B11/00; B60B11/10; B21; B21D; B21D53/00; B21D53/76; Y; Y10; Y10S; Y10S451/00; Y10S451/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1406438A
Cited
US1608180A
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US1564944A
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US1834758A
Cited
US1887186A
Cited
US1888956A
Cited
US1894632A
Cited
US2320369A
Cited
US2267147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |