US2881868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic damper
Assignee: Honeywell Inc
•
Filing: 1955-12-30
•
Granted: 1959-04-14
•
Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 Oscar G Frykman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:34
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/04; F; F16; F16F; F16F15/00; F16F15/02; F16F15/023; F16F15/0237; F16F9/00; F16F9/10; F16F9/14; F16F9/16; F16F9/32; F16F9/50; F16F9/52; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229; Y10T74/1257
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1407320A
Cited
US2532656A
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US2497921A
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US2657454A
Cited
GB653869A
Cited
US2699846A
Cited
US2775317A
Cited
US2718149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |