Patent US1822441A successfully refreshed from Google Patents.
US1822441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Assembling apparatus
Assignee: AT&T Inc
•
Filing: 1929-03-09
•
Granted: 1931-09-08
•
Expires: 1949-03-09
Abstract
No abstract record available.
Inventors
- 👤 Knuuti Charles Otto
- 👤 Metzger Chester Allison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:47
CPC Classifications
H; H01; H01H; H01H63/00; H01H63/02; H01H63/06; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/5313; Y10T29/532; Y10T29/53209; Y10T29/53252; Y10T29/53678; Y10T29/53687
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1934-09-07 | 1935-03-09 | 1935-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-09-07 | 1939-03-09 | 1939-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-09-07 | 1943-03-09 | 1943-09-08 | $7700.00 | Window Closed / Lapsed |