US3523834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of deburring
Assignee: International Business Machines Corp
•
Filing: 1967-10-13
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Granted: 1970-08-11
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Expires: 1987-10-13
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Hewins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:25
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/73; B; B23; B23H; B23H5/00; B23H5/06; B23H9/00; B23H9/02; B24; B24B; B24B31/00; B24B31/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |