Patent US3034577A successfully refreshed from Google Patents.
US3034577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for removal of air from paper-making machine feed stock
Assignee: Rice Barton Corp
•
Filing: 1958-01-23
•
Granted: 1962-05-15
•
Expires: 1978-01-23
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Cirrito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:20
CPC Classifications
D; D21; D21D; D21D5/00; D21D5/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1998381A
Cited
US2202890A
Cited
US2344282A
Cited
US2384912A
Cited
US2677316A
Cited
US2614656A
Cited
US2756649A
Cited
FR1093016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |