US2636818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal alloy
Assignee: Individual
•
Filing: 1951-01-03
•
Granted: 1953-04-28
•
Expires: 1971-01-03
Abstract
No abstract record available.
Inventors
- 👤 Low Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:30
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1115238A
Cited
US1115239A
Cited
DE604201C
Cited
US2309136A
Cited
US2509801A
Cited
US2509800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |