US2471882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for converting material
Assignee: Individual
•
Filing: 1946-05-07
•
Granted: 1949-05-31
•
Expires: 1966-05-07
Abstract
No abstract record available.
Inventors
- 👤 Warren S Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:01
CPC Classifications
C; C04; C04B; C04B2/00; C04B2/10; F; F27; F27B; F27B19/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US159384A
Cited
US740589A
Cited
US785437A
Cited
US915531A
Cited
US1605279A
Cited
US1499850A
Cited
US1674919A
Cited
US1706748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |