Patent US2901775A successfully refreshed from Google Patents.
US2901775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of insulating pipe
Assignee: Zonolite Co
•
Filing: 1954-09-07
•
Granted: 1959-09-01
•
Expires: 1974-09-07
Abstract
No abstract record available.
Inventors
- 👤 David C Goff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:43
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/14; F16L59/15; F16L59/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1281408A
Cited
US1387067A
Cited
US1520840A
Cited
US1534134A
Cited
US1600696A
Cited
US1744102A
Cited
US1991393A
Cited
US2077094A
Cited
US2009811A
Cited
US2009812A
Cited
US2355966A
Cited
US2410308A
Cited
US2532587A
Cited
US2774383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |