US2450374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescopic tubular prop
Assignee: Tubes De Valenciennes & Denain SA
•
Filing: 1946-08-01
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Granted: 1948-09-28
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Expires: 1966-08-01
Abstract
No abstract record available.
Inventors
- 👤 Eugene Charles Gillet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:06
CPC Classifications
E; E21; E21D; E21D15/00; E21D15/14; E21D15/28; E21D15/43; E04; E04G; E04G25/00; E04G25/04; E04G25/06; E04G25/066; E21D15/285; E21D15/58; E21D15/581
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189728648A
Cited
US2363752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-28 | 1952-03-29 | 1952-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-28 | 1956-03-29 | 1956-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-28 | 1960-03-29 | 1960-09-28 | $7700.00 | Window Closed / Lapsed |