US2676796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double-acting pneumatically operated door opener
Assignee: Individual
•
Filing: 1950-06-05
•
Granted: 1954-04-27
•
Expires: 1970-06-05
Abstract
No abstract record available.
Inventors
- 👤 Rheinier I Meyerholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:06
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/50; E05F15/53
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US615194A
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US2243310A
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US1276431A
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US1835103A
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US2009081A
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US2011652A
Cited
US2283577A
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US2368722A
Cited
US2536489A
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US2641466A
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US2624569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |