US2877798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispensing valve mechanism
Assignee: Individual
•
Filing: 1954-06-21
•
Granted: 1959-03-17
•
Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Donald J Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:47
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919; Y10T137/87169; Y10T137/87233
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US294674A
Cited
US1163471A
Cited
US2014642A
Cited
US2530091A
Cited
CH254051A
Cited
US2659385A
Cited
US2693201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |