Patent US2587353A successfully refreshed from Google Patents.
US2587353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular building
Assignee: Individual
•
Filing: 1946-04-25
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Granted: 1952-02-26
•
Expires: 1966-04-25
Abstract
No abstract record available.
Inventors
- 👤 Howard J Marschak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:17
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/343; E04B1/346
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1116244A
Cited
US1394489A
Cited
US1804997A
Cited
US1861069A
Cited
US1855534A
Cited
US2176712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |