Patent US840578A successfully refreshed from Google Patents.
US840578A
Expired / Lapsed
US
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Forging-machine.
Assignee: Individual
•
Filing: 1902-10-22
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Granted: 1907-01-08
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Expires: 1922-10-22
Abstract
No abstract record available.
Inventors
- 👤 Mackintosh Mackay Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:30
CPC Classifications
B; B21; B21D; B21D7/00; B21D7/06; B21J; B21J7/00; B21J7/02; B21J7/14
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) | 1910-01-07 | 1910-07-09 | 1911-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-01-07 | 1914-07-09 | 1915-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-01-07 | 1918-07-09 | 1919-01-08 | $7700.00 | Window Closed / Lapsed |