US2513075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Letter opening machine
Assignee: Individual
•
Filing: 1946-10-15
•
Granted: 1950-06-27
•
Expires: 1966-10-15
Abstract
No abstract record available.
Inventors
- 👤 Hugo A Youngstrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:59
CPC Classifications
B; B43; B43M; B43M7/00; B43M7/007; Y; Y10; Y10S; Y10S30/00; Y10S30/03; Y10S83/00; Y10S83/912; Y10T; Y10T83/00; Y10T83/222; Y10T83/748; Y10T83/7593; Y10T83/7647; Y10T83/869; Y10T83/8696; Y10T83/87; Y10T83/8776; Y10T83/8785; Y10T83/8821
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |