US2838825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve actuating mechanism
Assignee: SELF STORING WINDOW CO Inc
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Filing: 1954-10-04
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Granted: 1958-06-17
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Expires: 1974-10-04
Abstract
No abstract record available.
Inventors
- 👤 Allen V Knollenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:16
CPC Classifications
B; B23; B23D; B23D59/00; B23D59/02; B23Q; B23Q3/00; B23Q3/16; Y; Y10; Y10S; Y10S29/00; Y10S29/057; Y10T; Y10T83/00; Y10T83/263; Y10T83/283; Y10T83/293; Y10T83/566; Y10T83/5669; Y10T83/576; Y10T83/5769; Y10T83/5787; Y10T83/5805
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |