US3042999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating magnetic printer write heads
Assignee: International Business Machines Corp
•
Filing: 1958-10-29
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Granted: 1962-07-10
•
Expires: 1978-10-29
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Page
- 👤 Theodore L Buley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:07
CPC Classifications
G; G03; G03G; G03G19/00; G11; G11B; G11B5/00; G11B5/127; Y; Y10; Y10S; Y10S264/00; Y10S264/58; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49036; Y10T29/49043; Y10T29/4906; Y10T29/49066
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |