US2703100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible valve for milking machines
Assignee: Individual
•
Filing: 1951-02-06
•
Granted: 1955-03-01
•
Expires: 1971-02-06
Abstract
No abstract record available.
Inventors
- 👤 Albert G Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:01
CPC Classifications
A; A01; A01J; A01J7/00; A01J7/005; Y; Y10; Y10T; Y10T137/00; Y10T137/7722
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US525816A
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US844410A
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US973704A
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US1586923A
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US1683322A
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DE503291C
Cited
US2342192A
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US2467150A
Cited
US2572658A
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US2558152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |