US2926905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operator for opening and closing windows
Assignee: Amerock Corp
•
Filing: 1956-07-18
•
Granted: 1960-03-01
•
Expires: 1976-07-18
Abstract
No abstract record available.
Inventors
- 👤 Axel W Ahlgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:08
CPC Classifications
E; E05; E05F; E05F11/00; E05F11/02; E05F11/08; E05F11/12; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18784
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2022036A
Cited
US1956476A
Cited
US2373197A
Cited
US2635485A
Cited
US2674452A
Cited
US2767979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |