US1559020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Envelope-opening machine
Assignee: Individual
•
Filing: 1920-10-13
•
Granted: 1925-10-27
•
Expires: 1940-10-13
Abstract
No abstract record available.
Inventors
- 👤 James V Washburne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:45
CPC Classifications
B; B43; B43M; B43M7/00; B43M7/008; Y; Y10; Y10S; Y10S83/00; Y10S83/912; Y10T; Y10T83/00; Y10T83/263; Y10T83/748; Y10T83/7593; Y10T83/7607; Y10T83/869; Y10T83/872; Y10T83/8798; Y10T83/8817
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) | 1928-10-26 | 1929-04-27 | 1929-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-10-26 | 1933-04-27 | 1933-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-10-26 | 1937-04-27 | 1937-10-27 | $7700.00 | Window Closed / Lapsed |