US2730705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic recycling warning light
Assignee: HALLERBERG
•
Filing: 1954-12-08
•
Granted: 1956-01-10
•
Expires: 1974-12-08
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Hallerberg
- 👤 Jr Roy L Roberts
- 👤 Herman H Flum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:16
CPC Classifications
F; F21; F21S; F21S8/00; F21W; F21W2111/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2424573A
Cited
US2424574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |