Patent US2885506A successfully refreshed from Google Patents.
US2885506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure sensitive control devices
Assignee: AT&T Inc
•
Filing: 1955-04-28
•
Granted: 1959-05-05
•
Expires: 1975-04-28
Abstract
No abstract record available.
Inventors
- 👤 Paul E Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:47
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4083; A47L11/4088; C; C23; C23G; C23G3/00; F; F16; F16P; F16P7/00; F16P7/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1340086A
Cited
US1396491A
Cited
DE452424C
Cited
US1782316A
Cited
US1914518A
Cited
US2170341A
Cited
US2358732A
Cited
US2439561A
Cited
US2517820A
Cited
US2680168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |