Patent US2920338A successfully refreshed from Google Patents.
US2920338A
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Assignee: Individual
•
Filing: 1956-10-05
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Granted: 1960-01-12
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Expires: 1976-10-05
Abstract
No abstract record available.
Inventors
- 👤 Harold W Falk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:57
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/22; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/30; E05F3/04; E05F3/10; E05F3/108; E05F3/221; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; Y; Y10; Y10S; Y10S16/00; Y10S16/09; Y10S277/00; Y10S277/91
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) | 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 |