US3384906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flush valve attachment
Assignee: Individual
•
Filing: 1965-11-26
•
Granted: 1968-05-28
•
Expires: 1985-11-26
Abstract
No abstract record available.
Inventors
- 👤 William L Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:58
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/30; E03D1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2139862A
Cited
US2436035A
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US2657395A
Cited
US2788525A
Cited
US2752608A
Cited
US2990555A
Cited
US2879520A
Cited
US2959790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |