US3496987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming three-dimensional refractory shapes
Assignee: Avco Corp
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Filing: 1967-06-29
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Granted: 1970-02-24
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Expires: 1987-06-29
Abstract
No abstract record available.
Inventors
- 👤 John D Peterson
- 👤 Gerald A Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:37
CPC Classifications
B; B23; B23H; B23H1/00; B23H1/04; B22; B22F; B22F3/00; B22F3/12; B22F3/1208; B22F3/1258; B22F3/1275; B22F2999/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49812; Y10T29/4998; Y10T29/49982; Y10T29/49984
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3426421A
Cited
US3322185A
Cited
US3206810A
Cited
US3334212A
Cited
US3367023A
Cited
US3393726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |