US3506133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewn fabric filter medium and method of manufacture
Assignee: Appleton Wire Works Corp
•
Filing: 1968-05-06
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Granted: 1970-04-14
•
Expires: 1988-05-06
Abstract
No abstract record available.
Inventors
- 👤 Charles A Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:29
CPC Classifications
D; D06; D06B; D06B15/00; D06B15/08; D06B15/085; D04; D04H; D04H1/00; D04H1/70; D04H1/72; D04H5/00; D04H5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA708758A
Cited
US830286A
Cited
US2139675A
Cited
US2355822A
Cited
US2416524A
Cited
GB1053954A
Cited
US3158984A
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 |