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US2641522A
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Assignee: Arthur D Little Inc
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Filing: 1950-01-14
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Granted: 1953-06-09
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Expires: 1970-01-14
Abstract
No abstract record available.
Inventors
- 👤 Gilbert W King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:17
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2401621A
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US2457214A
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US2371040A
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US2451859A
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US2466467A
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US2422428A
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US2495075A
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US2513112A
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US2536955A
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US2436512A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |