US2463994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making aggregates
Assignee: FUNKHOUSER Co
•
Filing: 1944-08-25
•
Granted: 1949-03-08
•
Expires: 1964-08-25
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Nichols
- 👤 Romayne M Beyard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:09
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/02; C04B20/04; C04B20/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US451818A
Cited
US930801A
Cited
US1390435A
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US1786714A
Cited
US2024176A
Cited
US2035845A
Cited
US2347535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |