Patent US2921798A successfully refreshed from Google Patents.
US2921798A
Expired / Lapsed
US
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Combination household utility implement
Assignee: Individual
•
Filing: 1958-07-01
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Granted: 1960-01-19
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Expires: 1978-07-01
Abstract
No abstract record available.
Inventors
- 👤 Frank W Cislak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:15
CPC Classifications
E; E01; E01H; E01H5/00; E01H5/02; B; B62; B62B; B62B1/00; B62B1/10; B62B1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1814309A
Cited
US2198918A
Cited
US2460560A
Cited
US2508612A
Cited
US2598952A
Cited
US2784505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |