US3741804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cryogenic chemical deburring
Assignee: Motors Liquidation Co
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Filing: 1971-10-04
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Granted: 1973-06-26
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Expires: 1991-10-04
Abstract
Abstract PROCESS FOR CHEMICALLY DEBURRING MACHINED OR MOLED PARTS INCLUDING THE STEPS OF REFRIGERATING THE PART TO A SUFFICIENTLY LOW TEMPERATURE SUCH THAT IT WILL FORM AND RETAIN A PROTECTIVE LAYER OF ICE ON ITS PRINCIPAL SURFACES DURING THE DEBURRING OPERATION.
Inventors
- 👤 T Stapleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:51
CPC Classifications
C; C23; C23F; C23F1/00; B; B08; B08B; B08B7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |