US3538593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making composite structure
Assignee: Boeing North American Inc
•
Filing: 1965-12-13
•
Granted: 1970-11-10
•
Expires: 1985-12-13
Abstract
No abstract record available.
Inventors
- 👤 Julian P King Jr
- 👤 Norman Klimmek
- 👤 Phillip A Beeson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:52
CPC Classifications
C; C22; C22C; C22C47/00; C22C47/02; C22C47/06; C22C47/062; C22C47/068; B; B23; B23K; B23K20/00; C22C47/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2169937A
Cited
US2421607A
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US3153581A
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US3201862A
Cited
US3144370A
Cited
US3371407A
Cited
US3372470A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |