US33393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in envelopes for cartridges
Assignee: —
•
Filing: —
•
Granted: 1861-10-01
•
Expires: 1878-10-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:09
CPC Classifications
F; F42; F42B; F42B5/00; F42B5/38; Y; Y10; Y10S; Y10S102/00; Y10S102/70
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) | 1864-09-30 | 1865-04-01 | 1865-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1868-09-30 | 1869-04-01 | 1869-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1872-09-30 | 1873-04-01 | 1873-10-01 | $7700.00 | Window Closed / Lapsed |