US2613076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door operation control
Assignee: National Pneumatic Co Inc
•
Filing: 1948-03-20
•
Granted: 1952-10-07
•
Expires: 1968-03-20
Abstract
No abstract record available.
Inventors
- 👤 Cyrus W Bassett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:07
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/632; E05F15/649; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/51
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1682254A
Cited
US1130994A
Cited
US1287717A
Cited
US1411167A
Cited
US1741988A
Cited
US1536813A
Cited
US1758548A
Cited
US1961349A
Cited
GB438620A
Cited
US2138521A
Cited
DE670530C
Cited
US2170014A
Cited
US2243914A
Cited
US2339528A
Cited
US2368722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |