US3438754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zinc-coated steel with vapor-deposited aluminum overlay and method of producing same
Assignee: Republic Steel Corp
•
Filing: 1965-02-18
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Granted: 1969-04-15
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Expires: 1985-02-18
Abstract
No abstract record available.
Inventors
- 👤 George A Shepard
- 👤 Carl F Brooker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:56
CPC Classifications
C; C23; C23C; C23C28/00; C23C28/02; C23C28/023; C23C14/00; C23C14/02; C23C14/024; C23C14/025; C23C2/00; C23C2/04; C23C2/06; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/938; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/12799
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB400752A
Cited
US2405662A
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US2490978A
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US2566138A
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US2959494A
Cited
US3117887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |