US2339221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making double walled vessels
Assignee: STATOR Corp
•
Filing: 1942-03-19
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Granted: 1944-01-11
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Expires: 1962-03-19
Abstract
No abstract record available.
Inventors
- 👤 Russell A Gulick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:14
CPC Classifications
B; B31; B31B; B31B50/00; B31B50/60; B31B50/62; B31B50/626; B31B2105/00; B31B2110/00; B31B2110/10; B31B2120/00; B31B2120/50; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044; Y10T156/1048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-01-10 | 1947-07-12 | 1948-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-01-10 | 1951-07-12 | 1952-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-01-10 | 1955-07-12 | 1956-01-11 | $7700.00 | Window Closed / Lapsed |