US1804753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction material
Assignee: DAVID G SMALL
•
Filing: 1928-06-25
•
Granted: 1931-05-12
•
Expires: 1948-06-25
Abstract
No abstract record available.
Inventors
- 👤 Gordon C Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:31
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/8409; E04B2001/8457; E04B2001/8461; E04B2001/8476; E04B2001/848; E04B2001/8495; Y; Y10; Y10S; Y10S264/00; Y10S264/57; Y10S264/63
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) | 1934-05-11 | 1934-11-10 | 1935-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-05-11 | 1938-11-10 | 1939-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-05-11 | 1942-11-10 | 1943-05-12 | $7700.00 | Window Closed / Lapsed |