US305962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeding apparatus for rotary drills
Assignee: —
•
Filing: —
•
Granted: 1884-09-30
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Expires: 1901-09-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:32
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/021
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) | 1887-09-30 | 1888-03-31 | 1888-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1891-09-30 | 1892-03-31 | 1892-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1895-09-30 | 1896-03-31 | 1896-09-30 | $7700.00 | Window Closed / Lapsed |