US2587810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring grip pipe coupling
Assignee: Individual
•
Filing: 1947-08-08
•
Granted: 1952-03-04
•
Expires: 1967-08-08
Abstract
No abstract record available.
Inventors
- 👤 Walter O Beyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:44
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/092
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US119254A
Cited
US428215A
Cited
FR447127A
Cited
US1240170A
Cited
US2001835A
Cited
GB456539A
Cited
US2184376A
Cited
US2473973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |