Patent US161604A successfully refreshed from Google Patents.
US161604A
Expired / Lapsed
US
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Improvement in envelope-cutting machines
Assignee: —
•
Filing: —
•
Granted: 1875-04-06
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Expires: 1892-04-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:15
CPC Classifications
B; B23; B23D; B23D15/00; B23D15/02; B21; B21D; B21D28/00; B21D28/002; Y; Y10; Y10S; Y10S83/00; Y10S83/911; Y10T; Y10T83/00; Y10T83/869; Y10T83/8696
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) | 1878-04-05 | 1878-10-05 | 1879-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1882-04-05 | 1882-10-05 | 1883-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1886-04-05 | 1886-10-05 | 1887-04-06 | $7700.00 | Window Closed / Lapsed |