US2699484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deicer for roofs
Assignee: Individual
•
Filing: 1952-11-07
•
Granted: 1955-01-11
•
Expires: 1972-11-07
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Michaels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:01
CPC Classifications
H; H05; H05B; H05B3/00; E; E04; E04D; E04D13/00; E04D13/04; E04D13/076; E04D13/0762; E04D13/10; E04D13/103; H05B2214/00; H05B2214/02
Claims Analysis
Total Claims: 0
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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) | 1958-01-10 | 1958-07-12 | 1959-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-10 | 1962-07-12 | 1963-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-10 | 1966-07-12 | 1967-01-11 | $7700.00 | Window Closed / Lapsed |