US2755538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Commutator assembling machine
Assignee: Hoover Co
•
Filing: 1952-01-05
•
Granted: 1956-07-24
•
Expires: 1972-01-05
Abstract
No abstract record available.
Inventors
- 👤 Carl W Kirsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:29
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/06; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53039; Y10T29/5313; Y10T29/53143; Y10T29/53148; Y10T29/53161; Y10T29/53265; Y10T29/53478
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1272176A
Cited
US1899325A
Cited
US1979434A
Cited
US2057692A
Cited
US2324925A
Cited
US2394955A
Cited
US2499539A
Cited
FR945445A
Cited
US2516681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |