Patent US2865201A successfully refreshed from Google Patents.
Patent US2152190A successfully refreshed from Google Patents.
US2152190A
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Assignee: WILLIAM P WITHEROW
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Filing: 1936-05-28
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Granted: 1939-03-28
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Expires: 1956-05-28
Abstract
No abstract record available.
Inventors
- 👤 Henderson Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:27
CPC Classifications
E; E04; E04C; E04C1/00; E04C1/40; E04C1/41; B; B28; B28B; B28B19/00; B28B19/003; Y; Y10; Y10S; Y10S264/00; Y10S264/57
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) | 1942-03-27 | 1942-09-26 | 1943-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-03-27 | 1946-09-26 | 1947-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-03-27 | 1950-09-26 | 1951-03-28 | $7700.00 | Window Closed / Lapsed |