US2557947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic brush spring adjuster
Assignee: International Standard Electric Corp
•
Filing: 1947-08-14
•
Granted: 1951-06-26
•
Expires: 1967-08-14
Abstract
No abstract record available.
Inventors
- 👤 Deakin Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:39
CPC Classifications
G; G01; G01N; G01N3/00; H; H04; H04Q; H04Q1/00; H04Q1/18; H04Q1/20; G01N2203/00; G01N2203/02; G01N2203/026; G01N2203/0288; G01N2203/0292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2355468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |