US2218541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for forming crown cap center spots
Assignee: Continental Can Co Inc
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Filing: 1938-10-11
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Granted: 1940-10-22
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Expires: 1958-10-11
Abstract
No abstract record available.
Inventors
- 👤 Alfred L Kronquest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:11
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/38; B21D51/44; B21D51/46; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/041; Y10T83/0524; Y10T83/0577; Y10T83/202; Y10T83/2066; Y10T83/207; Y10T83/2092; Y10T83/2207; Y10T83/283; Y10T83/465; Y10T83/4766; Y10T83/4769; Y10T83/4795; Y10T83/4809
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) | 1943-10-22 | 1944-04-22 | 1944-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-22 | 1948-04-22 | 1948-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-22 | 1952-04-22 | 1952-10-22 | $7700.00 | Window Closed / Lapsed |