US2636422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulp molding apparatus having a forming device and a springactuated flexible permeable structure
Assignee: Individual
•
Filing: 1947-08-06
•
Granted: 1953-04-28
•
Expires: 1967-08-06
Abstract
No abstract record available.
Inventors
- 👤 Pierson George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:57
CPC Classifications
D; D21; D21J; D21J3/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US190654A
Cited
US368794A
Cited
US504730A
Cited
US708642A
Cited
US1041129A
Cited
US1637532A
Cited
US1899197A
Cited
US2089746A
Cited
US2187918A
Cited
US2213902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |