US3526557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making filamentous mats
Assignee: American Air Filter Co Inc
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Filing: 1966-11-18
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Granted: 1970-09-01
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Expires: 1986-11-18
Abstract
No abstract record available.
Inventors
- 👤 Harold J Taylor Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:54
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/02; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/12; B29K; B29K2105/00; B29K2105/06; B29K2105/12; B29K2105/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |