Patent US2421935A successfully refreshed from Google Patents.
US2421935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die
Assignee: Individual
•
Filing: 1944-04-17
•
Granted: 1947-06-10
•
Expires: 1964-04-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph H Gosnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:31
CPC Classifications
B; B31; B31D; B31D5/00; B31D5/02; B31B; B31B70/00; B31D5/0086; B31B2160/00; B31B2160/10; B31B50/00; B31B50/59; B31B50/592
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US210784A
Cited
US279118A
Cited
US284440A
Cited
US411156A
Cited
US859977A
Cited
US857123A
Cited
US1189823A
Cited
US1522978A
Cited
US1774809A
Cited
US2158312A
Cited
US2353253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-09 | 1950-12-09 | 1951-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-09 | 1954-12-09 | 1955-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-09 | 1958-12-09 | 1959-06-10 | $7700.00 | Window Closed / Lapsed |