US2221967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder supporting and protecting means
Assignee: Union Carbide Corp
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Filing: 1935-09-18
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Granted: 1940-11-19
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Expires: 1955-09-18
Abstract
No abstract record available.
Inventors
- 👤 Mercer G Farrar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:40
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/06; F17C13/08; F17C13/084; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/0119; F17C2203/00; F17C2203/06; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2205/00; F17C2205/01; F17C2205/0103; F17C2205/0107; F17C2205/0153; F17C2205/0173; F17C2205/03; F17C2205/0302; F17C2205/0308; F17C2205/0338; F17C2221/00; F17C2221/01; F17C2221/011; F17C2221/014; F17C2223/00; F17C2223/01; F17C2223/0107; F17C2223/0123; F17C2223/03; F17C2223/036
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) | 1943-11-19 | 1944-05-20 | 1944-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-11-19 | 1948-05-20 | 1948-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-11-19 | 1952-05-20 | 1952-11-19 | $7700.00 | Window Closed / Lapsed |