US1172519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door-operating mechanism.
Assignee: National Pneumatic Co Inc
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Filing: 1910-11-18
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Granted: 1916-02-22
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Expires: 1930-11-18
Abstract
No abstract record available.
Inventors
- 👤 Albert Gottschalk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:56
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/50; F; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B2211/00; F15B2211/30; F15B2211/32; F15B2211/329
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) | 1919-02-21 | 1919-08-23 | 1920-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-02-21 | 1923-08-23 | 1924-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-02-21 | 1927-08-23 | 1928-02-22 | $7700.00 | Window Closed / Lapsed |