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US2667690A
Expired / Lapsed
US
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Can opener and the like
Assignee: Individual
•
Filing: 1952-05-31
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Granted: 1954-02-02
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Expires: 1972-05-31
Abstract
No abstract record available.
Inventors
- 👤 Franz K Krag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:17
CPC Classifications
B; B67; B67B; B67B7/00; B67B7/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2119502A
Cited
US2197449A
Cited
US2259499A
Cited
US2406831A
Cited
US2516746A
Cited
US2556731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |