Patent US3493476A successfully refreshed from Google Patents.
US3493476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfidation and oxidation resistant coating
Assignee: Avco Corp
•
Filing: 1965-11-01
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Granted: 1970-02-03
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Expires: 1985-11-01
Abstract
No abstract record available.
Inventors
- 👤 Joseph G Lucas
- 👤 William R Freeman Jr War Rentz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:51
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/04; C23C2/12; C23C2/02; C23C2/026; C23C28/00; C23C28/02; C23C28/023; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12944
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1792082A
Cited
GB565083A
Cited
US2851766A
Cited
US2453772A
Cited
US2809127A
Cited
US2917818A
Cited
US2888387A
Cited
US3046205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |