US2749210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antitarnish
Assignee: —
•
Filing: —
•
Granted: 1956-06-05
•
Expires: 1973-06-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:59
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0073; C11D17/00; C11D17/04; C11D17/049; C11D7/00; C11D7/02; C11D7/04; C11D7/10; C11D7/12; C11D7/22; C11D7/26; C11D7/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
AN ARTICLE OF MANUFACTURE FOR PROTECTING SILVERWARE FROM TARNISH COMPRISING A FABRIC IMPREGNATED WITH A SALT OF ZINC, THE ANION OF WHICH IS A MEMBER OF THE GROUP CONSISTING OF A CARBONATE AND A BORATE AND CONTAINING SODIUM ACETATE, SAID IMPREGNATED FABRIC WHEN MOISTENED HAVING A PH FROM 7.0 TO 10.0.
Claim 2
Dependent Claim
51 words
AN ARTICLE OF MANUFACTURE FOR PROTECTING SILVERWARE FROM TARNISH COMPRISING A FABRIC IMPREGNATED WITH A SALT OF ZINC, THE ANION OF WHICH IS A MEMBER OF THE GROUP CONSISTING OF A CARBONATE AND A BORATE AND CONTAINING SODIUM ACETATE, SAID IMPREGNATED FABRIC WHEN MOISTENED HAVING A PH FROM 7.0 TO 10.0.
References Cited (Backward Citations)
US223814A
Cited
US380515A
Cited
USRE18379E
Cited
US1203241A
Cited
US1628610A
Cited
US1949781A
Cited
GB519799A
Cited
US2155045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |