Patent US2967014A successfully refreshed from Google Patents.
US2967014A
Expired / Lapsed
US
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Fan construction of acid resistant plastic material
Assignee: Individual
•
Filing: 1953-11-24
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Granted: 1961-01-03
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Expires: 1973-11-24
Abstract
No abstract record available.
Inventors
- 👤 Walter W Pabst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:29
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/46; F04D29/462; F04D29/02; F04D29/023; F04D29/26; F04D29/28; F04D29/281; F05; F05D; F05D2300/00; F05D2300/40; F05D2300/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1381673A
Cited
US1585669A
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US1665458A
Cited
US1877347A
Cited
US1895488A
Cited
DE851726C
Cited
US2616764A
Cited
US2557201A
Cited
GB662105A
Cited
US2626741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |