Patent US2933474A successfully refreshed from Google Patents.
Patent US2813481A successfully refreshed from Google Patents.
US2813481A
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Record-impressing apparatus
Assignee: Raytheon Co
•
Filing: 1954-08-18
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Granted: 1957-11-19
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Expires: 1974-08-18
Abstract
No abstract record available.
Inventors
- 👤 Hansen Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:08
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/08; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8776; Y10T83/8782; Y10T83/8784; Y10T83/8788
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB118698A
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US1333308A
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US1359807A
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US1716699A
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US1675969A
Cited
US1688552A
Cited
US1860729A
Cited
US2227143A
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US2245879A
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US2427358A
Cited
US2687088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |