Patent US2806400A successfully refreshed from Google Patents.
US2806400A
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Assignee: PHILAMON LAB Inc
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Filing: 1954-03-10
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Granted: 1957-09-17
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Expires: 1974-03-10
Abstract
No abstract record available.
Inventors
- 👤 Boris F Grib
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:10
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H9/48; G; G04; G04C; G04C3/00; G04C3/08; G04C3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1545251A
Cited
GB639348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |