US3035340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for relieving stresses in and straightening tubular workpieces
Assignee: Appel Process Ltd
•
Filing: 1958-04-25
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Granted: 1962-05-22
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Expires: 1978-04-25
Abstract
No abstract record available.
Inventors
- 👤 Gerhard H Appel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:28
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/30; C; C21; C21D; C21D7/00; C21D7/02; C21D7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2114302A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |