Patent US2644555A successfully refreshed from Google Patents.
US2644555A
Expired / Lapsed
US
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Doorpost construction
Assignee: All Steel Equipment Inc
•
Filing: 1949-10-08
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Granted: 1953-07-07
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Expires: 1969-10-08
Abstract
No abstract record available.
Inventors
- 👤 Fritz A Saaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:51
CPC Classifications
E; E05; E05D; E05D5/00; E05D5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1267612A
Cited
US1640525A
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US1864559A
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US1724135A
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US1984934A
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GB394670A
Cited
GB444915A
Cited
US2093926A
Cited
US2152746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |