US2963868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seadrome
Assignee: Sunoco Inc
•
Filing: 1954-03-15
•
Granted: 1960-12-13
•
Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Edward R Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:03
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/04; E02B17/08; E02B17/0809; E02B17/0836; E02B17/0872; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1558
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE515208A
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US103899A
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US427149A
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US1465664A
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US2248051A
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GB600129A
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GB612201A
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US2552899A
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US2674857A
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US2657540A
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US2600761A
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US2579703A
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US2589146A
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US2771747A
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US2740261A
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US2775869A
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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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |