US2417488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for testing and assorting resistance elements
Assignee: EIDP Inc
•
Filing: 1942-06-13
•
Granted: 1947-03-18
•
Expires: 1962-06-13
Abstract
No abstract record available.
Inventors
- 👤 Stanley L Handforth
- 👤 Charles R Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:12
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/04; B07C5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US676034A
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GB191226639A
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US1254690A
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US1814437A
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US2016455A
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US1984031A
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US2138645A
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US2217342A
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US2221323A
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US2244338A
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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) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |