Patent US4820528A successfully refreshed from Google Patents.
Patent US2189654A successfully refreshed from Google Patents.
US2189654A
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Assignee: Enterprise Manufacturing Co
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Filing: 1936-09-22
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Granted: 1940-02-06
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Expires: 1956-09-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Rief
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:57
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/02; F16B39/10; A; A01; A01K; A01K89/00; A01K89/006; A01K89/015; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/974; Y10S411/979; Y10S411/98; Y10S411/982; Y10S411/984; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20762
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-02-05 | 1943-08-07 | 1944-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-02-05 | 1947-08-07 | 1948-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-02-05 | 1951-08-07 | 1952-02-06 | $7700.00 | Window Closed / Lapsed |