US3506202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulper
Assignee: Individual
•
Filing: 1967-03-31
•
Granted: 1970-04-14
•
Expires: 1987-03-31
Abstract
No abstract record available.
Inventors
- 👤 Edward H Cumpston Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:45
CPC Classifications
D; D21; D21D; D21D1/00; D21D1/20; D21D1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2706621A
Cited
US2776800A
Cited
US2968444A
Cited
US3049307A
Cited
US3073535A
Cited
US3243129A
Cited
US3314617A
Cited
US3342425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |