US2483806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof concrete composition
Assignee: Stancal Asphalt and Bitumuls Co
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Filing: 1946-09-18
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Granted: 1949-10-04
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Expires: 1966-09-18
Abstract
No abstract record available.
Inventors
- 👤 Walter D Buckley
- 👤 Paul E Mccoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:13
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B24/00; C04B24/16; C04B24/18; C08; C08L; C08L95/00; C08L95/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-03 | 1953-04-04 | 1953-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-03 | 1957-04-04 | 1957-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-03 | 1961-04-04 | 1961-10-04 | $7700.00 | Window Closed / Lapsed |