US138563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in blast-governors for grain-separators
Assignee: —
•
Filing: —
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Granted: 1873-05-06
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Expires: 1890-05-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:56
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; G05D16/103; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793
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) | 1876-05-05 | 1876-11-04 | 1877-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1880-05-05 | 1880-11-04 | 1881-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1884-05-05 | 1884-11-04 | 1885-05-06 | $7700.00 | Window Closed / Lapsed |