Patent US3548930A successfully refreshed from Google Patents.
US3548930A
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Isothermal cover with thermal reservoirs
Assignee: AMBROSE W BYRD
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Filing: 1969-07-30
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Granted: 1970-12-22
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Expires: 1989-07-30
Abstract
No abstract record available.
Inventors
- 👤 Ambrose W Byrd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:57
CPC Classifications
F; F28; F28D; F28D20/00; F28D20/02; B; B64; B64G; B64G1/00; B64G1/22; B64G1/46; B64G1/50; B64G1/52; B64G1/58; F28D15/00; F28D15/02; F28D15/04; Y; Y02; Y02E; Y02E60/00; Y02E60/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
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 |