Patent US2457070A successfully refreshed from Google Patents.
US2457070A
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Apparatus for making building units
Assignee: HERMAN J SCHARWATH
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Filing: 1944-07-13
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Granted: 1948-12-21
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Expires: 1964-07-13
Abstract
No abstract record available.
Inventors
- 👤 John A Scharwath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:25
CPC Classifications
B; B28; B28B; B28B19/00; B28B1/00; B28B1/52; B28B1/522; B28B1/526; E; E04; E04C; E04C1/00; E04C1/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US725930A
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US1274830A
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US1263051A
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US2207782A
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US2321397A
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US2308589A
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US2355278A
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US2288585A
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US2333998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |