US2567247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse generator
Assignee: Individual
•
Filing: 1945-11-14
•
Granted: 1951-09-11
•
Expires: 1965-11-14
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Spalding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:22
CPC Classifications
H; H03; H03K; H03K5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2175900A
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US2188970A
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US2284101A
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US2413440A
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US2335265A
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US2440932A
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US2448070A
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US2472209A
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US2457140A
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US2419340A
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US2439321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |