US2488252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surfacing material
Assignee: Master Builders Co
•
Filing: 1946-03-27
•
Granted: 1949-11-15
•
Expires: 1966-03-27
Abstract
No abstract record available.
Inventors
- 👤 Bourdette R Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:49
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/47; C04B14/00; C04B14/02; C04B14/34; C04B26/00; C04B26/02; C04B26/26; C04B28/00; C04B28/02; C04B41/009; C08; C08L; C08L95/00; C08L95/005; C04B2111/00; C04B2111/00474; C04B2111/00482
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191128857A
Cited
US1470378A
Cited
DE395766C
Cited
US2028956A
Cited
US2068966A
Cited
GB498108A
Cited
US2370386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |