US802945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic valve.
Assignee: Individual
•
Filing: 1903-06-25
•
Granted: 1905-10-24
•
Expires: 1923-06-25
Abstract
No abstract record available.
Inventors
- 👤 Isaac G Waterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:54
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0675; F16K31/0679
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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 |