US2279726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making lightweight cylinders
Assignee: CO Two Fire Equipment Co
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Filing: 1939-10-26
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Granted: 1942-04-14
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Expires: 1959-10-26
Abstract
No abstract record available.
Inventors
- 👤 Scott E Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:57
CPC Classifications
B; B21; B21K; B21K21/00; Y; Y10; Y10S; Y10S220/00; Y10S220/22; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49446; Y10T29/49826
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) | 1945-04-13 | 1945-10-13 | 1946-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-04-13 | 1949-10-13 | 1950-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-04-13 | 1953-10-13 | 1954-04-14 | $7700.00 | Window Closed / Lapsed |