Patent US1864334A successfully refreshed from Google Patents.
Patent US2501294A successfully refreshed from Google Patents.
US2501294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsator for milking machines
Assignee: Individual
•
Filing: 1945-12-26
•
Granted: 1950-03-21
•
Expires: 1965-12-26
Abstract
No abstract record available.
Inventors
- 👤 Sigvard Svend Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:37
CPC Classifications
A; A01; A01J; A01J5/00; A01J5/04; A01J5/10; A01J5/12; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2546
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1484193A
Cited
US2086868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |