Patent US2438906A successfully refreshed from Google Patents.
US2438906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure
Assignee: Individual
•
Filing: 1945-04-21
•
Granted: 1948-04-06
•
Expires: 1965-04-21
Abstract
No abstract record available.
Inventors
- 👤 William D Elsas
- 👤 Lowengardt Paul
- 👤 Scheftel Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:13
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/24; B65D51/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE366638C
Cited
US1418814A
Cited
US1595326A
Cited
US1737273A
Cited
CH204207A
Cited
US2321998A
Cited
US2385648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-06 | 1951-10-06 | 1952-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-06 | 1955-10-06 | 1956-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-06 | 1959-10-06 | 1960-04-06 | $7700.00 | Window Closed / Lapsed |