US2554798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Kalart Co Inc
•
Filing: 1948-05-28
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Granted: 1951-05-29
•
Expires: 1968-05-28
Abstract
No abstract record available.
Inventors
- 👤 Schwartz Morris
- 👤 Castedello William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:59
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/18; G03B13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1616723A
Cited
DE601694C
Cited
GB485863A
Cited
FR846959A
Cited
FR876699A
Cited
US2386614A
Cited
US2384552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |