US2721650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pinch-roll assembly
Assignee: Wyeth Holdings LLC
•
Filing: 1952-01-24
•
Granted: 1955-10-25
•
Expires: 1972-01-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Percival W Cummings
- 👤 Jason M Salsbury
- 👤 Obuchowski Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:40
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/225; D02J1/226
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US600726A
Cited
US1030395A
Cited
US2249147A
Cited
US2413073A
Cited
US2565228A
Cited
US2558733A
Cited
US2626146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |