US2209402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making pressure vessels
Assignee: AO Smith Corp
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Filing: 1938-05-07
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Granted: 1940-07-30
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Expires: 1958-05-07
Abstract
No abstract record available.
Inventors
- 👤 William R Kepler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:42
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/02; F16L9/04; B; B21; B21D; B21D51/00; B21D51/16; B21D51/24; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992
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) | 1943-07-30 | 1944-01-29 | 1944-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-07-30 | 1948-01-29 | 1948-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-07-30 | 1952-01-29 | 1952-07-30 | $7700.00 | Window Closed / Lapsed |