US2631078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Parker Pen Co
•
Filing: 1949-05-24
•
Granted: 1953-03-10
•
Expires: 1969-05-24
Abstract
No abstract record available.
Inventors
- 👤 David G Watrous
- 👤 Doig James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:27
CPC Classifications
A; A47; A47F; A47F5/00; A47F5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1565532A
Cited
US1200695A
Cited
US1591909A
Cited
US1594385A
Cited
US1868236A
Cited
US2125856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |