US2133845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant tubular article
Assignee: Chase Brass and Copper Co Inc
•
Filing: 1936-03-30
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Granted: 1938-10-18
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Expires: 1956-03-30
Abstract
No abstract record available.
Inventors
- 👤 Donald K Crampton
- 👤 Newell W Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:46
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/01; F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/08
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) | 1941-10-17 | 1942-04-18 | 1942-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-10-17 | 1946-04-18 | 1946-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-10-17 | 1950-04-18 | 1950-10-18 | $7700.00 | Window Closed / Lapsed |