US2646822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic-coated pipe and pipe fitting
Assignee: PRESSTITE ENGINEERING Co
•
Filing: 1949-12-31
•
Granted: 1953-07-28
•
Expires: 1969-12-31
Abstract
No abstract record available.
Inventors
- 👤 William C Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:51
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/18; F16L58/182
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US645187A
Cited
US1120731A
Cited
US1497386A
Cited
US1842298A
Cited
US1969588A
Cited
US2233734A
Cited
US2440651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |