US2143574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn and fabric
Assignee: Individual
•
Filing: 1937-12-15
•
Granted: 1939-01-10
•
Expires: 1957-12-15
Abstract
No abstract record available.
Inventors
- 👤 William H Porter
- 👤 Thomas H Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:56
CPC Classifications
D; D03; D03D; D03D27/00; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23993; Y10T428/29; Y10T428/2904
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-01-09 | 1942-07-11 | 1943-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-01-09 | 1946-07-11 | 1947-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-01-09 | 1950-07-11 | 1951-01-10 | $7700.00 | Window Closed / Lapsed |