US2869751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated storage tank and method of making a storage tank
Assignee: PFAUDER PERMUTIT Inc
•
Filing: 1954-09-03
•
Granted: 1959-01-20
•
Expires: 1974-09-03
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Klope
- 👤 Robert G Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:42
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/02; B65D90/06; Y; Y10; Y10S; Y10S220/00; Y10S220/917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |