Patent US2549189A successfully refreshed from Google Patents.
US2549189A
Expired / Lapsed
US
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Building construction unit
Assignee: Individual
•
Filing: 1947-02-07
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Granted: 1951-04-17
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Expires: 1967-02-07
Abstract
No abstract record available.
Inventors
- 👤 Gabo Naum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:58
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/32; F; F16; F16L; F16L59/00; F16L59/08; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/24; Y10T428/24149; Y10T428/24628; Y10T428/24661; Y10T428/24669
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US770293A
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US1083271A
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CH75020A
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US1469220A
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US1965265A
Cited
US1875188A
Cited
US1997389A
Cited
US2184113A
Cited
US2160677A
Cited
US2410922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |