US2903100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ratio changer
Assignee: Wagner Electric Corp
•
Filing: 1955-06-06
•
Granted: 1959-09-08
•
Expires: 1975-06-06
Abstract
No abstract record available.
Inventors
- 👤 Walter R Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:16
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1490300A
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US2028491A
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US2181717A
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US2751575A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |