Patent US1867362A successfully refreshed from Google Patents.
US1867362A
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US
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Insulation of metal bodies
Assignee: AT&T Inc
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Filing: 1930-11-21
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Granted: 1932-07-12
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Expires: 1950-11-21
Abstract
No abstract record available.
Inventors
- 👤 Lathrop Hubbel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:22
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/16; H01F1/18; Y; Y10; Y10S; Y10S118/00; Y10S118/19
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) | 1935-07-12 | 1936-01-11 | 1936-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-07-12 | 1940-01-11 | 1940-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-07-12 | 1944-01-11 | 1944-07-12 | $7700.00 | Window Closed / Lapsed |