US2436249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust protective hood
Assignee: Individual
•
Filing: 1944-09-08
•
Granted: 1948-02-17
•
Expires: 1964-09-08
Abstract
No abstract record available.
Inventors
- 👤 Edmund A Clement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:53
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A62; A62B; A62B17/00; A62B17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US127331A
Cited
US128451A
Cited
US232233A
Cited
US766426A
Cited
US1035217A
Cited
GB191221828A
Cited
FR493333A
Cited
US1502679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-16 | 1951-08-18 | 1952-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-16 | 1955-08-18 | 1956-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-16 | 1959-08-18 | 1960-02-17 | $7700.00 | Window Closed / Lapsed |