US2941694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite tube structure
Assignee: Watts Electric and Manufacturing Co
•
Filing: 1958-09-15
•
Granted: 1960-06-21
•
Expires: 1978-09-15
Abstract
No abstract record available.
Inventors
- 👤 Jack B Harman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:16
CPC Classifications
B; B65; B65D; B65D35/00; B65D35/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US722508A
Cited
US1892788A
Cited
CH180839A
Cited
US2136033A
Cited
US2349962A
Cited
US2679954A
Cited
US2792149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |