US2855041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curtain arm structure
Assignee: American Hospital Supply Corp
•
Filing: 1953-11-20
•
Granted: 1958-10-07
•
Expires: 1973-11-20
Abstract
No abstract record available.
Inventors
- 👤 Floyd A Blashfield
- 👤 Harry K Dewitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:28
CPC Classifications
A; A47; A47H; A47H1/00; A47H1/02; A47H1/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE185385C
Cited
US1669560A
Cited
US930554A
Cited
US1112514A
Cited
US1416297A
Cited
US1495821A
Cited
US1644661A
Cited
US1819842A
Cited
US2416910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |