US2835766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostat
Assignee: Penn Controls Inc
•
Filing: 1955-11-15
•
Granted: 1958-05-20
•
Expires: 1975-11-15
Abstract
No abstract record available.
Inventors
- 👤 Few William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:36
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/12; H01H37/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2376092A
Cited
US1672859A
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US1695879A
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GB355228A
Cited
US2236699A
Cited
US2262343A
Cited
US2392498A
Cited
US2446474A
Cited
FR996194A
Cited
US2563341A
Cited
FR60442E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |