Patent US1555243A successfully refreshed from Google Patents.
US1555243A
Expired / Lapsed
US
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Floor-form apparatus
Assignee: Blaw Knox Co
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Filing: 1920-04-15
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Granted: 1925-09-29
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Expires: 1940-04-15
Abstract
No abstract record available.
Inventors
- 👤 Garlinghouse Leslie Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:27
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/36; E04G11/38
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) | 1928-09-28 | 1929-03-30 | 1929-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-09-28 | 1933-03-30 | 1933-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-09-28 | 1937-03-30 | 1937-09-29 | $7700.00 | Window Closed / Lapsed |