Patent US1427100A successfully refreshed from Google Patents.
US1427100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of working metals
Assignee: Individual
•
Filing: 1918-07-01
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Granted: 1922-08-29
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Expires: 1938-07-01
Abstract
No abstract record available.
Inventors
- 👤 Oliver C Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:22
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/08; B; B21; B21B; B21B9/00; B21B1/00; B21B1/16; B21B1/18; B21B3/00; B21B2003/005
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) | 1925-08-28 | 1926-02-27 | 1926-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-08-28 | 1930-02-27 | 1930-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-08-28 | 1934-02-27 | 1934-08-29 | $7700.00 | Window Closed / Lapsed |