Patent US1864889A successfully refreshed from Google Patents.
US1864889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and products in the art of forming, machining, and the recovery of the products thereof, of metals
Assignee: Individual
•
Filing: 1929-03-19
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Granted: 1932-06-28
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Expires: 1949-03-19
Abstract
No abstract record available.
Inventors
- 👤 John L Brown
- 👤 William W Varney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:40
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/04; B21C37/02; Y; Y10; Y10S; Y10S82/00; Y10S82/90; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/49792; Y10T29/51; Y10T29/5104; Y10T29/5109; Y10T29/5113; Y10T29/5187; Y10T82/00; Y10T82/10; Y10T82/25; Y10T82/2572
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) | 1935-06-28 | 1935-12-28 | 1936-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-06-28 | 1939-12-28 | 1940-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-06-28 | 1943-12-28 | 1944-06-28 | $7700.00 | Window Closed / Lapsed |