Patent US3510059A successfully refreshed from Google Patents.
US3510059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic flue damper
Assignee: Individual
•
Filing: 1968-04-22
•
Granted: 1970-05-05
•
Expires: 1988-04-22
Abstract
No abstract record available.
Inventors
- 👤 Alphons Diermayer
- 👤 Luitpold Kutzner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:16
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F23; F23N; F23N3/00; F23N3/04; F23N3/047; G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3228605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |