Patent US3673042A successfully refreshed from Google Patents.
US3673042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass polishing machinery
Assignee: Individual
•
Filing: 1969-08-05
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Granted: 1972-06-27
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Expires: 1989-08-05
Abstract
Abstract A method and apparatus for polishing glassware in which articles of glassware are placed in a vessel, and while remaining in the same vessel, are treated with streams of acid and rinse liquid. The glassware may be treated with detergent and neutralizing liquid before and after the treatment with acid.
Inventors
- 👤 Colin Clayton Mayers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:57
CPC Classifications
C; C03; C03C; C03C15/00; C03C15/02
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |