Patent US2699801A successfully refreshed from Google Patents.
Patent US2216259A successfully refreshed from Google Patents.
US2216259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lettering brush
Assignee: C HOWARD HUNT PEN Co
•
Filing: 1939-04-21
•
Granted: 1940-10-01
•
Expires: 1959-04-21
Abstract
No abstract record available.
Inventors
- 👤 Knut O G Wetterstrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:27
CPC Classifications
A; A46; A46B; A46B11/00; A46B11/001; A46B11/0013; B; B44; B44D; B44D3/00; B44D3/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1943-10-01 | 1944-04-01 | 1944-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-01 | 1948-04-01 | 1948-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-01 | 1952-04-01 | 1952-10-01 | $7700.00 | Window Closed / Lapsed |