US2775975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain control system
Assignee: General Electric Co
•
Filing: 1954-02-01
•
Granted: 1957-01-01
•
Expires: 1974-02-01
Abstract
No abstract record available.
Inventors
- 👤 John L Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:20
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/02; A47L15/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1976902A
Cited
US1971588A
Cited
US2422022A
Cited
US2492288A
Cited
US2620811A
Cited
US2662536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |