US2559869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
House structure and heating system therefor
Assignee: Individual
•
Filing: 1948-08-25
•
Granted: 1951-07-10
•
Expires: 1968-08-25
Abstract
No abstract record available.
Inventors
- 👤 Frazer W Gay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:01
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/0023; F; F24; F24D; F24D11/00; F24D11/006; F24D11/007; F24F; F24F7/00; F24F7/04; F24S; F24S20/00; F24S20/60; F24S20/66; F24S21/00; Y; Y02; Y02B; Y02B10/00; Y02B10/20; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE259001C
Cited
US213138A
Cited
US246626A
Cited
US1086031A
Cited
US1168304A
Cited
US1371949A
Cited
US1467005A
Cited
US2210960A
Cited
FR875411A
Cited
FR875412A
Cited
US2355495A
Cited
US2364220A
Cited
US2465184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |