US2322498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for generating balancing signals
Assignee: Sperry Products Inc
•
Filing: 1942-01-07
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Granted: 1943-06-22
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Expires: 1962-01-07
Abstract
No abstract record available.
Inventors
- 👤 Zeitlin Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:28
CPC Classifications
G; G01; G01D; G01D3/00; G01D3/06
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) | 1946-06-21 | 1946-12-21 | 1947-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-06-21 | 1950-12-21 | 1951-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-06-21 | 1954-12-21 | 1955-06-22 | $7700.00 | Window Closed / Lapsed |