US3380875A
Expired / Lapsed
US
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Article and method for making a balanced panel from an unbalanced woody core
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1964-02-06
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Granted: 1968-04-30
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Expires: 1984-02-06
Abstract
No abstract record available.
Inventors
- 👤 Herbert H Borup
- 👤 Ford E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:13
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24066; Y10T428/24942; Y10T428/2495; Y10T428/31504; Y10T428/31678; Y10T428/31703
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB535161A
Cited
US2479342A
Cited
US2514318A
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US2713014A
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US3127304A
Cited
US3278355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |