Patent US2920684A successfully refreshed from Google Patents.
US2920684A
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Assignee: Rockwell-Standard Corp
•
Filing: 1955-05-25
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Granted: 1960-01-12
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Expires: 1975-05-25
Abstract
No abstract record available.
Inventors
- 👤 Harry H Fante
- 👤 August T Gonia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:43
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/02; A47C1/022; A47C1/023; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19079
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |