US3449819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosively welded honeycomb method
Assignee: Hexcel Corp
•
Filing: 1968-05-17
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Granted: 1969-06-17
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Expires: 1988-05-17
Abstract
No abstract record available.
Inventors
- 👤 George F Blank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:16
CPC Classifications
B; B21; B21D; B21D47/00; B23; B23K; B23K20/00; B23K20/06; B23K20/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49806; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3031746A
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US3060879A
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US3036374A
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US3121283A
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US3206847A
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US3281930A
Cited
US3205574A
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US3196533A
Cited
US3327382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |