US2457086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor
Assignee: Individual
•
Filing: 1944-07-31
•
Granted: 1948-12-21
•
Expires: 1964-07-31
Abstract
No abstract record available.
Inventors
- 👤 Mitchell Pullan
- 👤 Mitchell Uttley Ranson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:30
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/02; E04B5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2042797A
Cited
US1986998A
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US2028554A
Cited
US2084853A
Cited
US2131268A
Cited
US2121269A
Cited
US2145012A
Cited
US2181831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |