Patent US3453849A successfully refreshed from Google Patents.
US3453849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of clad metals
Assignee: Texas Instruments Inc
•
Filing: 1965-10-13
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Granted: 1969-07-08
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Expires: 1985-10-13
Abstract
No abstract record available.
Inventors
- 👤 John F Clarke
- 👤 Bruce J Bliss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:22
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/02; B22F7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2372607A
Cited
US2681375A
Cited
US3121631A
Cited
US3199176A
Cited
US3316625A
Cited
US3330654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |