Patent US5951575A successfully refreshed from Google Patents.
US2150291A
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Assignee: Pollak Steel Co
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Filing: 1937-11-26
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Granted: 1939-03-14
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Expires: 1957-11-26
Abstract
No abstract record available.
Inventors
- 👤 Edward J Paque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:55
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/02; E04H17/10; E04H17/124; E04H12/00; E04H12/22; E04H12/2207; E04H12/2215; Y; Y10; Y10S; Y10S256/00; Y10S256/05
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) | 1942-03-13 | 1942-09-12 | 1943-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-03-13 | 1946-09-12 | 1947-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-03-13 | 1950-09-12 | 1951-03-14 | $7700.00 | Window Closed / Lapsed |