US1725973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fountain pen
Assignee: William Demuth & Co
•
Filing: 1927-06-03
•
Granted: 1929-08-27
•
Expires: 1947-06-03
Abstract
No abstract record available.
Inventors
- 👤 Bensel Duryea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:41
CPC Classifications
B; B43; B43K; B43K5/00; B43K5/02; B43K5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1932-08-26 | 1933-02-25 | 1933-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-08-26 | 1937-02-25 | 1937-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-08-26 | 1941-02-25 | 1941-08-27 | $7700.00 | Window Closed / Lapsed |