US2609927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Commutator testing and sorting device
Assignee: Motors Liquidation Co
•
Filing: 1948-04-17
•
Granted: 1952-09-09
•
Expires: 1968-04-17
Abstract
No abstract record available.
Inventors
- 👤 Rupert C Whelchel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:24
CPC Classifications
—
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1372945A
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US939109A
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US1656887A
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US1690345A
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GB348311A
Cited
US1971426A
Cited
US1842810A
Cited
US2270428A
Cited
US2383300A
Cited
US2427672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |