US3371906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iris valve
Assignee: Link Belt Co
•
Filing: 1965-01-14
•
Granted: 1968-03-05
•
Expires: 1985-01-14
Abstract
No abstract record available.
Inventors
- 👤 Richard P Lubold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:40
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/54; B65D90/56; F; F16; F16K; F16K3/00; F16K3/02; F16K3/03; F16K7/00; F16K7/02; F16K7/08; Y; Y10; Y10T; Y10T137/00; Y10T137/598
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3123262A
Cited
US1431918A
Cited
US2023230A
Cited
US2663467A
Cited
GB634975A
Cited
US2695605A
Cited
US3058631A
Cited
US3131835A
Cited
US3243490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |