US2416447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weather resistant flameproof paper
Assignee: EIDP Inc
•
Filing: 1943-07-27
•
Granted: 1947-02-25
•
Expires: 1963-07-27
Abstract
No abstract record available.
Inventors
- 👤 Laughlin Edwin Romig
- 👤 Ayres John Lecroy
- 👤 Jr Paul Jones Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:16
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/34; D21H17/00; D21H17/71; D21H17/74; D21H27/00; D21H27/06; D21H5/00; D21H5/0002; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-24 | 1950-08-26 | 1951-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-24 | 1954-08-26 | 1955-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-24 | 1958-08-26 | 1959-02-25 | $7700.00 | Window Closed / Lapsed |