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US3469301A
Expired / Lapsed
US
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Process for the production of bonded metal structures
Assignee: Lukens Inc
•
Filing: 1966-12-30
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Granted: 1969-09-30
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Expires: 1986-12-30
Abstract
No abstract record available.
Inventors
- 👤 Donald L Freyberger
- 👤 John F Longenecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:30
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/18; C23C4/04; C23C4/06; C23C4/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3299503A
Cited
US3332753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |