US930404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic gas-feed for vacuum-tubes.
Assignee: MOORE ELECTRICAL CO
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Filing: 1906-05-08
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Granted: 1909-08-10
•
Expires: 1926-05-08
Abstract
No abstract record available.
Inventors
- 👤 Daniel Mcfarlan Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:03
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/24; H01J61/28
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) | 1912-08-09 | 1913-02-08 | 1913-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-08-09 | 1917-02-08 | 1917-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-08-09 | 1921-02-08 | 1921-08-10 | $7700.00 | Window Closed / Lapsed |