US2684206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush roll apparatus for opening and tufting fibrous materials and mixing the fiberswith binders
Assignee: Johns Manville Corp
•
Filing: 1948-04-05
•
Granted: 1954-07-20
•
Expires: 1968-04-05
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Zettel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:08
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US233829A
Cited
US613993A
Cited
US926168A
Cited
US957646A
Cited
US1027163A
Cited
US1067370A
Cited
US1344180A
Cited
US1691196A
Cited
US2136839A
Cited
US2196791A
Cited
US2245632A
Cited
US2248526A
Cited
US2321082A
Cited
US2345988A
Cited
US2261403A
Cited
US2448849A
Cited
US2484966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |