US3381108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apartment or house with centralized heating system and sauna room
Assignee: Individual
•
Filing: 1965-06-22
•
Granted: 1968-04-30
•
Expires: 1985-06-22
Abstract
No abstract record available.
Inventors
- 👤 Wuck Christine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:33
CPC Classifications
F; F24; F24D; F24D5/00; F24D3/00; F24D3/02; F24D3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1781358A
Cited
US1410706A
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US1957616A
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US2188566A
Cited
US2252064A
Cited
US2300848A
Cited
US2465184A
Cited
US3246435A
Cited
US3244856A
Cited
US3271786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |