US2638951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible tank and stabilizer means
Assignee: Individual
•
Filing: 1950-12-18
•
Granted: 1953-05-19
•
Expires: 1970-12-18
Abstract
No abstract record available.
Inventors
- 👤 Franklin E Smith
- 👤 Nathan H Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:40
CPC Classifications
B; B65; B65D; B65D29/00; Y; Y10; Y10S; Y10S383/00; Y10S383/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2406903A
Cited
US2369921A
Cited
GB561819A
Cited
US2500341A
Cited
US2485028A
Cited
US2507939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |