US3543370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for explosively forming a tube within a tube sheet
Assignee: Foster Wheeler Inc
•
Filing: 1968-05-08
•
Granted: 1970-12-01
•
Expires: 1988-05-08
Abstract
No abstract record available.
Inventors
- 👤 Irwin Berman
- 👤 Bharat S Thakkar
- 👤 Joseph W Schroeder
- 👤 Herman P Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:07
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/04; B21D39/042; F; F28; F28F; F28F19/00; F28F19/002; F28F9/00; F28F9/02; F28F9/04; F28F9/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/49375; Y10T29/49805
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3036373A
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US3113518A
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US3140537A
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US3153848A
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US3409969A
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US3430323A
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US3402870A
Cited
US3411198A
Cited
US3426681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |