Patent US2698574A successfully refreshed from Google Patents.
US2698574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for bonding nonwoven webs
Assignee: Visking Corp
•
Filing: 1951-07-11
•
Granted: 1955-01-04
•
Expires: 1971-07-11
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Dougherty
- 👤 Harry P Eichin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:12
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; D04H1/66; B; B41; B41F; B41F15/00; B41F15/08; B41F15/0831; B41F15/0836
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1101951A
Cited
US1516557A
Cited
US1495146A
Cited
US1675442A
Cited
US2049495A
Cited
US2003544A
Cited
US2084827A
Cited
US2180135A
Cited
US2275514A
Cited
US2359825A
Cited
US2419695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |