US506204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well-drilling machine
Assignee: —
•
Filing: —
•
Granted: 1893-10-10
•
Expires: 1910-10-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:30
CPC Classifications
E; E21; E21B; E21B1/00; E21B1/02; E21B1/04; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18176; Y10T74/18248; Y10T74/18256; Y10T74/18888; Y10T74/1892; Y10T74/18968
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) | 1896-10-09 | 1897-04-10 | 1897-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1900-10-10 | 1901-04-11 | 1901-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1904-10-10 | 1905-04-11 | 1905-10-11 | $7700.00 | Window Closed / Lapsed |