Patent US4075013A successfully refreshed from Google Patents.
Patent US2480921A successfully refreshed from Google Patents.
US2480921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spraying attachment for centrifugal extractors
Assignee: HERMAN F HAHN
•
Filing: 1946-07-06
•
Granted: 1949-09-06
•
Expires: 1966-07-06
Abstract
No abstract record available.
Inventors
- 👤 Herman F Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:42
CPC Classifications
D; D06; D06F; D06F49/00; D06F49/006
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US608788A
Cited
US663888A
Cited
US762014A
Cited
US1429069A
Cited
US1528187A
Cited
US1542292A
Cited
US1747293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |