Patent US3526538A successfully refreshed from Google Patents.
US3526538A
Expired / Lapsed
US
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Nonwoven fabric product and the like and preparation thereof
Assignee: Airco Inc
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Filing: 1968-09-23
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Granted: 1970-09-01
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Expires: 1988-09-23
Abstract
No abstract record available.
Inventors
- 👤 Martin K Lindemann
- 👤 Rocco P Volpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:54
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C09J123/08; D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; D06; D06M; D06M15/00; D06M15/19; D06M15/21; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/268; Y10T442/00; Y10T442/20; Y10T442/273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2703794A
Cited
US3081197A
Cited
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 |