Patent US2706757A successfully refreshed from Google Patents.
US2706757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chime transformer switch
Assignee: RITTENHOUSE Co Inc
•
Filing: 1953-03-24
•
Granted: 1955-04-19
•
Expires: 1973-03-24
Abstract
No abstract record available.
Inventors
- 👤 Lloyd W Rittenhouse
- 👤 Robert R Hoge
- 👤 James L Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:15
CPC Classifications
H; H01; H01H; H01H61/00; H01H61/06; H01F; H01F27/00; H01F27/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US923839A
Cited
US1959205A
Cited
US2075614A
Cited
US2076275A
Cited
US2184699A
Cited
US2313969A
Cited
US2505689A
Cited
US2644899A
Cited
US2672563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |