US2935199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Under gravel filter device
Assignee: Individual
•
Filing: 1958-01-24
•
Granted: 1960-05-03
•
Expires: 1978-01-24
Abstract
No abstract record available.
Inventors
- 👤 Allan H Willinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:21
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2636473A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |