Patent US3496703A successfully refreshed from Google Patents.
US3496703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backpack air-conditioning apparatus
Assignee: RITE HARDWARE Mfg CO
•
Filing: 1967-10-09
•
Granted: 1970-02-24
•
Expires: 1987-10-09
Abstract
No abstract record available.
Inventors
- 👤 Graeme S Macleod
- 👤 Paul R Maguire
- 👤 William A Westhead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:04
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/006
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US533854A
Cited
US1000721A
Cited
US2332662A
Cited
US2448068A
Cited
US2649583A
Cited
US2813265A
Cited
US2912159A
Cited
US2947812A
Cited
US3044016A
Cited
US3075400A
Cited
US3049896A
Cited
US3000191A
Cited
US3078845A
Cited
US3316417A
Cited
US3140590A
Cited
US3286446A
Cited
US3323249A
Cited
US3290866A
Cited
US3253820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |