US3268990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making filters
Assignee: National Standard Co
•
Filing: 1963-12-02
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Granted: 1966-08-30
•
Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 Orville E Adler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:17
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/10; B01D39/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T29/49604; Y10T29/49801; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN THE METHOD OF MAKING A FILTER FORMED BY COMBINING FIRST AND SECOND FABRICES, EACH OF WHICH IS COMPOSED OF A PLURALITY OF FIRST METAL FILAMENTS AND A PLURALITY OF SECOND METAL FILAMENTS IN CROSSING RELATION WITH RESPECT TO EACH OTHER, AND IN WHICH SAID FIRST AND SECOND FABRICS ARE ARRANGED WITH THEIR SECOND METAL FILAMENTS IN CROSSING RELATION, THE STEPS COMPRISING JOINING SAID SEC-
Claim 2
Dependent Claim
65 words
IN THE METHOD OF MAKING A FILTER FORMED BY COMBINING FIRST AND SECOND FABRICES, EACH OF WHICH IS COMPOSED OF A PLURALITY OF FIRST METAL FILAMENTS AND A PLURALITY OF SECOND METAL FILAMENTS IN CROSSING RELATION WITH RESPECT TO EACH OTHER, AND IN WHICH SAID FIRST AND SECOND FABRICS ARE ARRANGED WITH THEIR SECOND METAL FILAMENTS IN CROSSING RELATION, THE STEPS COMPRISING JOINING SAID SEC-
References Cited (Backward Citations)
US3123446A
Cited
US2499977A
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US2619438A
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DE1115699B
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US3061912A
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US3049796A
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US3132099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |