Patent US1212707A successfully refreshed from Google Patents.
US2564784A
Expired / Lapsed
US
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Condenser
Assignee: AT&T Inc
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Filing: 1948-11-06
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Granted: 1951-08-21
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Expires: 1968-11-06
Abstract
No abstract record available.
Inventors
- 👤 David D Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:54
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0001; G01L9/0005; B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/92; B29C2948/00; B29C2948/92; B29C2948/92009; B29C2948/92019; B29C2948/92819; B29C2948/92857; B29C2948/92876; B29C2948/92895; B29C2948/92904; B29C48/03; B29C48/05; B29C48/06
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) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |