US3548491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass production of electronic devices
Assignee: International Business Machines Corp
•
Filing: 1968-11-14
•
Granted: 1970-12-22
•
Expires: 1988-11-14
Abstract
No abstract record available.
Inventors
- 👤 Norman G Ainslie
- 👤 Devendra S Chhabra
- 👤 Donald W Jepsen
- 👤 Walter E Mutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:06
CPC Classifications
H; H10; H10P; H10P54/00; H01; H01B; H01B13/00; H10D; H10D99/00; H10P95/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49758
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2755536A
Cited
US2894313A
Cited
US2748349A
Cited
US3465427A
Cited
US3461547A
Cited
US3377513A
Cited
US3388457A
Cited
US3474530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |