Patent US3550044A successfully refreshed from Google Patents.
US3550044A
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Assignee: Panasonic Holdings Corp
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Filing: 1969-03-24
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Granted: 1970-12-22
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Expires: 1989-03-24
Abstract
No abstract record available.
Inventors
- 👤 Shigeru Hayakawa
- 👤 Masanari Mikoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:23
CPC Classifications
C; C03; C03C; C03C21/00; C03C21/001; C03C21/005; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/26; C03C17/00; C03C17/02; C03C21/002; C03C3/00; C03C3/04; C03C3/076; C03C3/102; C03C3/105; C03C3/11; C03C3/112; C03C4/00; C03C4/0057
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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |