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Patent US1230475A successfully refreshed from Google Patents.
US1230475A
Expired / Lapsed
US
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Cement structure.
Assignee: Individual
•
Filing: 1915-01-26
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Granted: 1917-06-19
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Expires: 1935-01-26
Abstract
No abstract record available.
Inventors
- 👤 Henry A Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:58
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/22; E02D5/24; E02D5/30; Y; Y10; Y10S; Y10S138/00; Y10S138/06
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) | 1920-06-18 | 1920-12-18 | 1921-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-06-18 | 1924-12-18 | 1925-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-06-18 | 1928-12-18 | 1929-06-19 | $7700.00 | Window Closed / Lapsed |