US2086969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vent assemblage
Assignee: Hell Co
•
Filing: 1936-03-26
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Granted: 1937-07-13
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Expires: 1956-03-26
Abstract
No abstract record available.
Inventors
- 👤 Henry A Strelow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:31
CPC Classifications
B; B61; B61D; B61D5/00; B61D5/008; Y; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/0874; Y10T137/7504; Y10T137/7722; Y10T137/7771; Y10T137/7778; Y10T137/7837; Y10T137/7838; Y10T137/7842; Y10T137/7897; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7932; Y10T137/8593; Y10T137/86292; Y10T137/86324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-07-12 | 1941-01-11 | 1941-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-12 | 1945-01-11 | 1945-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-12 | 1949-01-11 | 1949-07-13 | $7700.00 | Window Closed / Lapsed |