US786578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined condenser and leak-coil.
Assignee: Individual
•
Filing: 1904-06-18
•
Granted: 1905-04-04
•
Expires: 1924-06-18
Abstract
No abstract record available.
Inventors
- 👤 Walter W Massie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:19
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/34; H03F1/36; H03H; H03H2/00; H03H2/005; H03H2/008
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) | 1908-04-03 | 1908-10-03 | 1909-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-04-03 | 1912-10-03 | 1913-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-04-03 | 1916-10-03 | 1917-04-04 | $7700.00 | Window Closed / Lapsed |