Patent US1775159A successfully refreshed from Google Patents.
US1775159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal and process of manufacture
Assignee: GUARDIAN METALS Co
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Filing: 1926-12-21
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Granted: 1930-09-09
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Expires: 1946-12-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph G Donaldson
- 👤 Henry L Coles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:51
CPC Classifications
C; C22; C22B; C22B15/00; C22B15/0026; C22B15/006; C22B15/0028; C22B15/003; C22B15/0039; C22B9/00; C22B9/006
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) | 1933-09-08 | 1934-03-10 | 1934-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-09-08 | 1938-03-10 | 1938-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-09-08 | 1942-03-10 | 1942-09-09 | $7700.00 | Window Closed / Lapsed |