Patent US1590635A successfully refreshed from Google Patents.
US1590635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio system
Assignee: ELECTRIC APPARATUS CO
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Filing: 1925-05-05
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Granted: 1926-06-29
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Expires: 1945-05-05
Abstract
No abstract record available.
Inventors
- 👤 David G Mccaa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:07
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/10; H04B1/12
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) | 1929-06-28 | 1929-12-28 | 1930-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-06-28 | 1933-12-28 | 1934-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-06-28 | 1937-12-28 | 1938-06-29 | $7700.00 | Window Closed / Lapsed |