US1852759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enameled article and method of producing the same
Assignee: AT&T Inc
•
Filing: 1930-06-14
•
Granted: 1932-04-05
•
Expires: 1950-06-14
Abstract
No abstract record available.
Inventors
- 👤 Leon I Shaw
- 👤 Albert G Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:10
CPC Classifications
B; B44; B44C; B44C3/00; B44C3/02; B44C3/025; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/24926
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) | 1935-04-05 | 1935-10-05 | 1936-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-04-05 | 1939-10-05 | 1940-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-04-05 | 1943-10-05 | 1944-04-05 | $7700.00 | Window Closed / Lapsed |