US3397732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for spray forming of tubular bodies
Assignee: United States Department of the Army
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Filing: 1966-01-03
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Granted: 1968-08-20
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Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Cleves H Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:53
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/14
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) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |