US3496603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single screw extruder
Assignee: Johnson and Johnson
•
Filing: 1967-08-17
•
Granted: 1970-02-24
•
Expires: 1987-08-17
Abstract
No abstract record available.
Inventors
- 👤 Gregory Julius Listner
- 👤 Arthur James Sampson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:36
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/50; B29C48/68; B29C48/395; B29C48/03; B29C48/05; B29C48/07; B29C48/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2653349A
Cited
US2770837A
Cited
US2752633A
Cited
US3197814A
Cited
US3304580A
Cited
US3295160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |