Patent US3393282A successfully refreshed from Google Patents.
US3393282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control switch assembly having variable differential and range adjustment
Assignee: American Air Filter Co Inc
•
Filing: 1967-04-28
•
Granted: 1968-07-16
•
Expires: 1987-04-28
Abstract
No abstract record available.
Inventors
- 👤 William B Peter
- 👤 Jr Charles G Goss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:24
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/26; H01H35/2607; H01H35/2628; H01H35/265
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |