US941428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control of water-tight doors.
Assignee: General Electric Co
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Filing: 1906-10-15
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Granted: 1909-11-30
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Expires: 1926-10-15
Abstract
No abstract record available.
Inventors
- 👤 Wilbur L Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:30
CPC Classifications
B; B63; B63B; B63B19/00; Y; Y10; Y10S; Y10S200/00; Y10S200/09
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) | 1912-11-29 | 1913-05-31 | 1913-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-11-29 | 1917-05-31 | 1917-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-11-29 | 1921-05-31 | 1921-11-30 | $7700.00 | Window Closed / Lapsed |