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US2487015A
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Electromagnetic counting device
Assignee: Kellogg Switchboard and Supply Co
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Filing: 1946-09-26
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Granted: 1949-11-01
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Expires: 1966-09-26
Abstract
No abstract record available.
Inventors
- 👤 John I Bellamy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:15
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/74; G; G06; G06M; G06M1/00; G06M1/08; G06M1/10; G06M1/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US849443A
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US767703A
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US994345A
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US978992A
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US991829A
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US1318178A
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US2127322A
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US2305450A
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US2292489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |