US2508128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing composite plates or sheets
Assignee: SUPERFLEX PLYWOOD Corp
•
Filing: 1946-07-09
•
Granted: 1950-05-16
•
Expires: 1966-07-09
Abstract
No abstract record available.
Inventors
- 👤 Hendrikus F Waards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:59
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/40; E04C2/405; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1059; Y10T156/1062; Y10T156/1064; Y10T156/1089
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |