US3448646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of continuous webs
Assignee: Deritend Engineering Co Ltd
•
Filing: 1966-01-28
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Granted: 1969-06-10
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Expires: 1986-01-28
Abstract
No abstract record available.
Inventors
- 👤 Thomas D Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:42
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/38; B26F1/384; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/26; B23Q5/266; B26D; B26D11/00; B26D5/00; B26D5/20; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0515; Y10T83/0519; Y10T83/465; Y10T83/4705; Y10T83/474; Y10T83/4743; Y10T83/4766; Y10T83/4775
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1306499A
Cited
US2061004A
Cited
US2146946A
Cited
US2778422A
Cited
US3049078A
Cited
US3347119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |