US2537779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ice breaker or crusher
Assignee: MCLAIN
•
Filing: 1947-08-16
•
Granted: 1951-01-09
•
Expires: 1967-08-16
Abstract
No abstract record available.
Inventors
- 👤 Harold O Mclain
- 👤 Blatti Ruby Catherine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:52
CPC Classifications
F; F25; F25C; F25C5/00; F25C5/02; F25C5/04; F25C5/046; Y; Y10; Y10S; Y10S241/00; Y10S241/17
Claims Analysis
Total Claims: 0
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US1994051A
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US2416422A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |