US3537828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite stainless steel article
Assignee: United States Steel Corp
•
Filing: 1967-02-13
•
Granted: 1970-11-03
•
Expires: 1987-02-13
Abstract
No abstract record available.
Inventors
- 👤 John A Henrickson
- 👤 Nicholas Makrides
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:26
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10S428/9265; Y10S428/932; Y10T; Y10T428/00; Y10T428/12; Y10T428/12382
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1644097A
Cited
US2087051A
Cited
US2034278A
Cited
US2105583A
Cited
US3254971A
Cited
US3349488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |