Patent US2923431A successfully refreshed from Google Patents.
Patent US3034608A successfully refreshed from Google Patents.
US3034608A
Expired / Lapsed
US
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Sheet stiffening stringer
Assignee: ThyssenKrupp Budd Co
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Filing: 1959-03-03
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Granted: 1962-05-15
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Expires: 1979-03-03
Abstract
No abstract record available.
Inventors
- 👤 Reeves H Dengler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:19
CPC Classifications
B; B64; B64C; B64C3/00; B64C3/18; B64C3/182; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |