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Patent US3410703A successfully refreshed from Google Patents.
US3410703A
Expired / Lapsed
US
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Silver and copper tarnish preventatives
Assignee: Philip A Hunt Chemical Corp
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Filing: 1965-05-18
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Granted: 1968-11-12
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Expires: 1985-05-18
Abstract
No abstract record available.
Inventors
- 👤 Kroll Harry
- 👤 Sahely Camille
- 👤 Melvin A Lipson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:48
CPC Classifications
C; C23; C23F; C23F3/00; C23F3/04; C23F3/06; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C23F11/161; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
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) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |