US2652885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engel
Assignee: —
•
Filing: —
•
Granted: 1953-09-22
•
Expires: 1970-09-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:15
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/35; A47C23/00; A47C23/04; A47C23/05; A47C23/057; A47C31/00; A47C31/02; A47C31/04; A47C31/06; A47C7/28; A47C7/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2142740A
Cited
US2257633A
Cited
US2542458A
Cited
GB191228617A
Cited
GB416782A
Cited
US2251043A
Cited
US2217290A
Cited
US2332041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |