US2569169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hot-bonded fiber felts
Assignee: Wood Conversion Co
•
Filing: 1942-09-10
•
Granted: 1951-09-25
•
Expires: 1962-09-10
Abstract
No abstract record available.
Inventors
- 👤 Clark C Heritage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:15
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/60; B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/48; B29C65/4805; B29C65/481; B29C65/4815; B29C65/483; B29C65/4835; B29C65/486
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1336402A
Cited
US1461337A
Cited
US1905225A
Cited
US2057167A
Cited
US2047170A
Cited
US2249888A
Cited
US2252157A
Cited
US2288095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |