US2477975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsator for milking machines
Assignee: Individual
•
Filing: 1947-09-19
•
Granted: 1949-08-02
•
Expires: 1967-09-19
Abstract
No abstract record available.
Inventors
- 👤 William F Frock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:44
CPC Classifications
A; A01; A01J; A01J5/00; A01J5/04; A01J5/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86493; Y10T137/86574; Y10T137/86638; Y10T137/86646; Y10T137/86654
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1010204A
Cited
US1210304A
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US1447007A
Cited
US1744002A
Cited
US1949875A
Cited
US2039958A
Cited
US2308705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |