US3364916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating devices
Assignee: Wilkins and Mitchell Ltd
•
Filing: 1966-07-19
•
Granted: 1968-01-23
•
Expires: 1986-07-19
Abstract
No abstract record available.
Inventors
- 👤 Philip A Wilkins
- 👤 Royston A Chadbourne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:26
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/06; F24H3/10; F24H3/105; F23; F23M; F23M11/00; F24C; F24C15/00; F24C15/001; F24C15/002; F24C3/00; F24C3/002; F24C3/004; F24H15/00; F24H15/10; F24H15/128; F24H15/20; F24H15/281; F24H15/30; F24H15/305; F24H15/31; F24H15/345; F24H15/355; F24H15/36; F24H3/065; F24H9/00; F24H9/20; F24H9/2064; F24H9/2085
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2185490A
Cited
US2286853A
Cited
US2314089A
Cited
US2581942A
Cited
GB850852A
Cited
US2998003A
Cited
US3064638A
Cited
US3236454A
Cited
US3263749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |