US879062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectifier and detector.
Assignee: MASSACHUSETTS WIRELESS EQUIPMENT Co
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Filing: 1907-04-05
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Granted: 1908-02-11
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Expires: 1927-04-05
Abstract
No abstract record available.
Inventors
- 👤 George W Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:18
CPC Classifications
H; H10; H10D; H10D30/00; H10D30/60; H10D30/67; H10D30/674; H10D30/6755
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) | 1911-02-10 | 1911-08-12 | 1912-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-02-10 | 1915-08-12 | 1916-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-02-10 | 1919-08-12 | 1920-02-11 | $7700.00 | Window Closed / Lapsed |