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US2721899A
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US
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Pulse communication system
Assignee: General Dynamics Corp
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Filing: 1946-07-25
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Granted: 1955-10-25
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Expires: 1966-07-25
Abstract
No abstract record available.
Inventors
- 👤 James A Krumhansl
- 👤 Glenn H Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:19
CPC Classifications
H; H03; H03K; H03K7/00; H03K7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1848839A
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US2419292A
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US2231375A
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US2391776A
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US2395467A
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US2416330A
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US2408077A
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US2497411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |