US3549468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Honeycomb structure utilizing polybenzimidazole resin to join two core sections and to reinforce the edges of the cores
Assignee: Boeing North American Inc
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Filing: 1967-02-28
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Granted: 1970-12-22
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Expires: 1987-02-28
Abstract
No abstract record available.
Inventors
- 👤 Salvatore V Messineo
- 👤 Stanley Y Yoshino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:06
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; B; B23; B23K; B23K1/00; B23K1/0008; B23K1/0014; B23K35/00; B23K35/22; Y; Y10; Y10S; Y10S264/00; Y10S264/06; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24157
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA456037A
Cited
US2669860A
Cited
US3230184A
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US3210233A
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US3386969A
Cited
US3287311A
Cited
US3416994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |