US37940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in war-rockets
Assignee: —
•
Filing: —
•
Granted: 1863-03-17
•
Expires: 1880-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:32
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/32; F02K9/34
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) | 1866-03-16 | 1866-09-15 | 1867-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1870-03-16 | 1870-09-15 | 1871-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1874-03-16 | 1874-09-15 | 1875-03-17 | $7700.00 | Window Closed / Lapsed |