US2399259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making hollow filaments and product thereof
Assignee: Akzo Nobel UK PLC
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Filing: 1943-05-29
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Granted: 1946-04-30
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Expires: 1963-05-29
Abstract
No abstract record available.
Inventors
- 👤 Robert J Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:29
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/04; D01D5/06; D04; D04H; D04H3/00; D04H3/08; D04H3/16; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2973; Y10T428/2975
Claims Analysis
Total Claims: 0
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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) | 1949-04-29 | 1949-10-29 | 1950-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-04-29 | 1953-10-29 | 1954-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-04-29 | 1957-10-29 | 1958-04-30 | $7700.00 | Window Closed / Lapsed |