US3422247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated soldering apparatus
Assignee: ALAN L ROYSTON
•
Filing: 1966-03-21
•
Granted: 1969-01-14
•
Expires: 1986-03-21
Abstract
No abstract record available.
Inventors
- 👤 Alan L Royston
- 👤 Brian E Royston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:31
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/018; B23K1/012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1140660A
Cited
US1189735A
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US2609778A
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GB693197A
Cited
US2955187A
Cited
US3211354A
Cited
US3172382A
Cited
US3356830A
Cited
US3245598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |