US2930089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision casting
Assignee: Rolls Royce PLC
•
Filing: 1956-11-26
•
Granted: 1960-03-29
•
Expires: 1976-11-26
Abstract
No abstract record available.
Inventors
- 👤 Emblem Harold Garton
- 👤 Aston Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:41
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189915619A
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GB191108180A
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US2391855A
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US2380945A
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US2313674A
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US2521839A
Cited
GB688652A
Cited
GB710099A
Cited
GB716394A
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GB745402A
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GB741381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |