Patent US3330897A successfully refreshed from Google Patents.
US2493464A
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US
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Control apparatus and switch therefor
Assignee: PRODUCTION INSTR Co
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Filing: 1945-10-16
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Granted: 1950-01-03
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Expires: 1965-10-16
Abstract
No abstract record available.
Inventors
- 👤 Martin L Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:45
CPC Classifications
B; B65; B65B; B65B57/00; B65B57/20; G; G06; G06M; G06M1/00; G06M1/08; G06M7/00; G06M7/02; G06M7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US779139A
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US1008684A
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US1075891A
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US1333975A
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US1544860A
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US1574914A
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US1877989A
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US2363189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |