US2278888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial structure and process for producing same
Assignee: EIDP Inc
•
Filing: 1938-11-02
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Granted: 1942-04-07
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Expires: 1958-11-02
Abstract
No abstract record available.
Inventors
- 👤 Lewis Everett Vernon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:00
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/52; D01; D01D; D01D5/00; D01D5/20; D02; D02G; D02G3/00; D02G3/22; D02G3/34; D02G3/346; D02J; D02J1/00; D02J1/22; D02J1/227; D06P; D06P3/00; D06P3/82; D06P3/854; Y; Y10; Y10S; Y10S425/00; Y10S425/017; Y10S428/00; Y10S428/91; Y10S8/00; Y10S8/21; Y10S8/92; Y10S8/924; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2936
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) | 1945-04-06 | 1945-10-06 | 1946-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-04-06 | 1949-10-06 | 1950-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-04-06 | 1953-10-06 | 1954-04-07 | $7700.00 | Window Closed / Lapsed |