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US1065323A
Expired / Lapsed
US
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Door-operating device.
Assignee: National Pneumatic Co Inc
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Filing: 1909-09-24
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Granted: 1913-06-17
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Expires: 1929-09-24
Abstract
No abstract record available.
Inventors
- 👤 Albert Gottschalk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:43
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1916-06-16 | 1916-12-16 | 1917-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-06-16 | 1920-12-16 | 1921-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-06-16 | 1924-12-16 | 1925-06-17 | $7700.00 | Window Closed / Lapsed |