Patent US2497612A successfully refreshed from Google Patents.
US2497612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Katzman
Assignee: —
•
Filing: —
•
Granted: 1950-02-14
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Expires: 1967-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:07
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/015; A61L9/02; A61L9/03; F; F22; F22B; F22B1/00; F22B1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2352951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |