US2799734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speech brighteners
Assignee: Melpar Inc
•
Filing: 1952-04-04
•
Granted: 1957-07-16
•
Expires: 1972-04-04
Abstract
No abstract record available.
Inventors
- 👤 Glen D Camp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:31
CPC Classifications
G; G10; G10L; G10L21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1931866A
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US2250559A
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US2257782A
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US2250596A
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US2262846A
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US2283241A
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US2394544A
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US2420204A
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US2421136A
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US2602885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |