US2415839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite structures
Assignee: EIDP Inc
•
Filing: 1942-03-27
•
Granted: 1947-02-18
•
Expires: 1962-03-27
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Neal
- 👤 John J Verbane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:43
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J2321/00; Y; Y10; Y10S; Y10S8/00; Y10S8/11; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/296; Y10T428/31504; Y10T428/31826; Y10T442/00; Y10T442/20; Y10T442/2762; Y10T442/277; Y10T442/2861; Y10T442/2869
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US725094A
Cited
US1184015A
Cited
US1839950A
Cited
US2181538A
Cited
US2313945A
Cited
US2263305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |