Patent US847588A successfully refreshed from Google Patents.
US847588A
Expired / Lapsed
US
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Case-hardening.
Assignee: Individual
•
Filing: 1905-04-13
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Granted: 1907-03-19
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Expires: 1925-04-13
Abstract
No abstract record available.
Inventors
- 👤 Adolph W Machlet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:11
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/78; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/20; C23C8/22; Y; Y10; Y10S; Y10S76/00; Y10S76/02
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) | 1910-03-18 | 1910-09-17 | 1911-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-03-18 | 1914-09-17 | 1915-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-03-18 | 1918-09-17 | 1919-03-19 | $7700.00 | Window Closed / Lapsed |