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Patent US2683453A successfully refreshed from Google Patents.
US2683453A
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US
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Table
Assignee: Individual
•
Filing: 1950-02-01
•
Granted: 1954-07-13
•
Expires: 1970-02-01
Abstract
No abstract record available.
Inventors
- 👤 George C Tong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:24
CPC Classifications
A; A61; A61H; A61H23/00; A61H23/02; A61H23/0254; A61H23/0263; A61H2201/00; A61H2201/01; A61H2201/0119; A61H2201/0138; A61H2201/0142; Y; Y10; Y10S; Y10S5/00; Y10S5/915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US793428A
Cited
FR457018A
Cited
US1213137A
Cited
US1521790A
Cited
US1784082A
Cited
US1938006A
Cited
US2092266A
Cited
US2211542A
Cited
GB588257A
Cited
US2427053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |