US3539434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonwoven compositions having improved aging properties
Assignee: Goodrich Corp
•
Filing: 1967-12-27
•
Granted: 1970-11-10
•
Expires: 1987-12-27
Abstract
No abstract record available.
Inventors
- 👤 David C Spaulding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:13
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/37; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/285; D06M15/29; D21H17/38; D21H17/39; Y; Y10; Y10T; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/155
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |