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US799581A
Expired / Lapsed
US
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Vapor-lamp.
Assignee: AMERICAN SILVER Co
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Filing: 1905-05-09
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Granted: 1905-09-12
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Expires: 1925-05-09
Abstract
No abstract record available.
Inventors
- 👤 Charles E Trewhella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:05
CPC Classifications
F; F23; F23D; F23D99/00; F23D99/002; F23D99/004
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) | 1908-09-11 | 1909-03-13 | 1909-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-09-11 | 1913-03-13 | 1913-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-09-11 | 1917-03-13 | 1917-09-12 | $7700.00 | Window Closed / Lapsed |