Patent US3532225A successfully refreshed from Google Patents.
US3532225A
Expired / Lapsed
US
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Convertible geometric structure
Assignee: Rolls Royce Power Engineering PLC
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Filing: 1968-03-21
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Granted: 1970-10-06
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Expires: 1988-03-21
Abstract
No abstract record available.
Inventors
- 👤 Maude F Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:42
CPC Classifications
A; A47; A47B; A47B13/00; A47B13/02; A47F; A47F5/00; A47F5/10; A47F5/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1376087A
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US2125985A
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US2276308A
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US2576883A
Cited
US2509451A
Cited
US2461622A
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US2465104A
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US2462991A
Cited
US3069204A
Cited
US3276731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |