Patent US3532439A successfully refreshed from Google Patents.
US3532439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous reinforced bladed rotor
Assignee: Rolls Royce PLC
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Filing: 1967-11-24
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Granted: 1970-10-06
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Expires: 1987-11-24
Abstract
No abstract record available.
Inventors
- 👤 Jack Palfreyman
- 👤 Henry Edward Middleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:53
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0025; B29D22/00; F; F01; F01D; F01D5/00; F01D5/02; F01D5/021; F01D5/028; F01D5/12; F01D5/28; F01D5/282; F01D5/30; F01D5/3023; F01D5/303; F01D5/3038; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/321; F04D29/322; B29K; B29K2105/00; B29K2105/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/4932; Y10T29/49321
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) | 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 |