US3414188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan having hollow blades
Assignee: AMERICAN DAVIDSON Inc A CORP OF MICH
•
Filing: 1966-11-25
•
Granted: 1968-12-03
•
Expires: 1986-11-25
Abstract
No abstract record available.
Inventors
- 👤 Gallie Daniel Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:50
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/66; F04D29/68; F04D29/681; F04D29/26; F04D29/28; F04D29/281; F04D29/682; Y; Y10; Y10S; Y10S415/00; Y10S415/914
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
NL92179C
Cited
NL89617C
Cited
DE875984C
Cited
GB730147A
Cited
GB754055A
Cited
US2935245A
Cited
US3346235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |