US2127451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardening and waterproofing composition for concrete or mortar
Assignee: Master Builders Co
•
Filing: 1936-01-17
•
Granted: 1938-08-16
•
Expires: 1956-01-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward W Scripture
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:28
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/16; C04B24/18; Y; Y10; Y10S; Y10S588/00; Y10S588/901
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) | 1941-08-15 | 1942-02-14 | 1942-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-08-15 | 1946-02-14 | 1946-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-08-15 | 1950-02-14 | 1950-08-16 | $7700.00 | Window Closed / Lapsed |