Patent US2734498A successfully refreshed from Google Patents.
US2734498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Von arx
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:49
CPC Classifications
B; B08; B08B; B08B7/00; B08B7/02; B08B7/024; A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4052; A47L11/4058; B21; B21J; B21J7/00; B21J7/02; B21J7/14; B21J7/16; B28; B28D; B28D1/00; B28D1/18; B28D1/181; Y; Y10; Y10T; Y10T29/00; Y10T29/45; Y10T29/4528
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US176569A
Cited
US939544A
Cited
US1352582A
Cited
US1356338A
Cited
US1773408A
Cited
US1882769A
Cited
US2136529A
Cited
US2279922A
Cited
US2290596A
Cited
US2525250A
Cited
US2534969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |