Patent US2787784A successfully refreshed from Google Patents.
US2787784A
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US
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Triboelectric detecting system
Assignee: Individual
•
Filing: 1954-04-30
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Granted: 1957-04-02
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Expires: 1974-04-30
Abstract
No abstract record available.
Inventors
- 👤 Harold T Meryman
- 👤 Hampton W Shirer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:57
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/22; G08B13/26; G08B17/00; G08B17/06; G08B19/00; G08B19/005; H; H01; H01B; H01B7/00; H01B7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |