US2575230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically noiseless progressive contact means
Assignee: BALDWIN Co
•
Filing: 1948-07-03
•
Granted: 1951-11-13
•
Expires: 1968-07-03
Abstract
No abstract record available.
Inventors
- 👤 Raymond P Mork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:32
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/06; H01C10/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190121399A
Cited
US1577981A
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US2023382A
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US2081572A
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US2254366A
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US2215124A
Cited
US2297829A
Cited
US2296125A
Cited
US2333477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |