US2942300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming stiff threads
Assignee: National Research Corp
•
Filing: 1957-09-11
•
Granted: 1960-06-28
•
Expires: 1977-09-11
Abstract
No abstract record available.
Inventors
- 👤 Richard M Masters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:16
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/02; B32; B32B; B32B15/00; B32B15/04; B32B15/08; Y; Y10; Y10S; Y10S425/00; Y10S425/041
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |