US2703556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary fan and fan and orifice assembly
Assignee: Madison Management Group Inc
•
Filing: 1948-10-09
•
Granted: 1955-03-08
•
Expires: 1968-10-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Archibald C Doty
- 👤 William E Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:36
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/38; F04D29/384
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB189418719A
Cited
US652123A
Cited
US1668462A
Cited
US1806345A
Cited
US1993158A
Cited
US2023111A
Cited
US2056547A
Cited
US2370652A
Cited
US2240597A
Cited
US2390804A
Cited
US2536130A
Cited
US2581873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-07 | 1958-09-06 | 1959-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-07 | 1962-09-06 | 1963-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-07 | 1966-09-06 | 1967-03-08 | $7700.00 | Window Closed / Lapsed |