US3404904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe couplings
Assignee: HOLMBERG Inc
•
Filing: 1966-01-17
•
Granted: 1968-10-08
•
Expires: 1986-01-17
Abstract
No abstract record available.
Inventors
- 👤 Homer D Roe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:36
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/02; F16L27/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US554255A
Cited
US3127199A
Cited
AT24548B
Cited
US1500921A
Cited
US2175550A
Cited
FR873898A
Cited
US2556659A
Cited
GB878602A
Cited
FR1397378A
Cited
US3306636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |