US3383495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot water heating systems
Assignee: MERCANTILE TEXAS CREDIT Corp
•
Filing: 1967-04-28
•
Granted: 1968-05-14
•
Expires: 1987-04-28
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Laube
- 👤 John T Bensley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:05
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/20; F24H1/201; F24H1/202; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6606; Y10T137/8593; Y10T137/86187; Y10T137/86228
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE622931C
Cited
US2386949A
Cited
US2538586A
Cited
US2756739A
Cited
US2742560A
Cited
US2834865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |