US2811629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aquarium heating and indicating device
Assignee: Individual
•
Filing: 1956-10-23
•
Granted: 1957-10-29
•
Expires: 1976-10-23
Abstract
No abstract record available.
Inventors
- 👤 Eugene G Danner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:06
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/06; A01K63/065; H; H05; H05B; H05B3/00; H05B3/78; H05B3/80
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |