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US195407A
Expired / Lapsed
US
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Improvement in machines for opening envelopes
Assignee: —
•
Filing: —
•
Granted: 1877-09-18
•
Expires: 1894-09-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:58
CPC Classifications
B; B26; B26D; B26D3/00; B26D3/18; Y; Y10; Y10S; Y10S30/00; Y10S30/03; Y10S83/00; Y10S83/912; Y10T; Y10T83/00; Y10T83/566; Y10T83/5815; Y10T83/5842; Y10T83/5851; Y10T83/869; Y10T83/8776; Y10T83/8779; Y10T83/8781; Y10T83/8798; Y10T83/8804; Y10T83/8809
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) | 1880-09-17 | 1881-03-19 | 1881-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1884-09-17 | 1885-03-19 | 1885-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1888-09-17 | 1889-03-19 | 1889-09-18 | $7700.00 | Window Closed / Lapsed |