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US802959A
Expired / Lapsed
US
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Electromagnetic valve.
Assignee: Individual
•
Filing: 1904-02-08
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Granted: 1905-10-24
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Expires: 1924-02-08
Abstract
No abstract record available.
Inventors
- 👤 Isaac G Waterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:37
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655
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) | 1908-10-23 | 1909-04-24 | 1909-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-10-23 | 1913-04-24 | 1913-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-10-23 | 1917-04-24 | 1917-10-24 | $7700.00 | Window Closed / Lapsed |