US2177154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calcimine
Assignee: United States Gypsum Co
•
Filing: 1936-05-01
•
Granted: 1939-10-24
•
Expires: 1956-05-01
Abstract
No abstract record available.
Inventors
- 👤 Herman A Scholz
- 👤 Adams Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:52
CPC Classifications
C; C09; C09D; C09D7/00; C09D7/40; C09D7/60; C09D7/61; C08; C08K; C08K3/00; C08K3/18
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) | 1942-10-23 | 1943-04-24 | 1943-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-23 | 1947-04-24 | 1947-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-23 | 1951-04-24 | 1951-10-24 | $7700.00 | Window Closed / Lapsed |