US3457094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of upgrading low grade plywood
Assignee: Individual
•
Filing: 1967-11-15
•
Granted: 1969-07-22
•
Expires: 1987-11-15
Abstract
No abstract record available.
Inventors
- 👤 Armin Elmendorf
- 👤 Roland Etzold
- 👤 Thomas W Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:25
CPC Classifications
B; B27; B27D; B27D5/00; B27G; B27G1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2320702A
Cited
US2630395A
Cited
US2847701A
Cited
US2770556A
Cited
US2860597A
Cited
US2895845A
Cited
US3011903A
Cited
US3098053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |