Patent US2522572A successfully refreshed from Google Patents.
US2522572A
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Assignee: Machlett Laboratories Inc
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Filing: 1947-01-30
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Granted: 1950-09-19
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Expires: 1967-01-30
Abstract
No abstract record available.
Inventors
- 👤 William W Fengler
- 👤 Michael J Skehan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:41
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/46; H01R13/53; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204; Y10T29/49208; Y10T29/4922
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1497002A
Cited
US2051945A
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US2273538A
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US2283023A
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US2280711A
Cited
US2377689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |