Patent US3915610A successfully refreshed from Google Patents.
Patent US5048118A successfully refreshed from Google Patents.
US2033455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating wing
Assignee: Fulton Co
•
Filing: 1935-02-04
•
Granted: 1936-03-10
•
Expires: 1955-02-04
Abstract
No abstract record available.
Inventors
- 👤 Joel R Thorp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:19
CPC Classifications
B; B60; B60J; B60J1/00; B60J1/08; B60J1/12; B60J1/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1939-03-10 | 1939-09-09 | 1940-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-03-10 | 1943-09-09 | 1944-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-03-10 | 1947-09-09 | 1948-03-10 | $7700.00 | Window Closed / Lapsed |