US2977665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for non-shrinking fibrous materials
Assignee: Individual
•
Filing: 1957-07-05
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Granted: 1961-04-04
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Expires: 1977-07-05
Abstract
No abstract record available.
Inventors
- 👤 William W Mcelrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:02
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06C; D06C7/00; D06C7/02; D06M15/37; D06M15/39; D06M15/423; D06M15/70; Y; Y10; Y10S; Y10S8/00; Y10S8/21; Y10T; Y10T442/00; Y10T442/20; Y10T442/2369; Y10T442/2385; Y10T442/2762; Y10T442/2861; Y10T442/2893
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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |